Company lists · Data refreshed September 2026

Top 25 Historical preservation organizations worldwide

RevenueBase identified 883 company matches for historical preservation organizations worldwide as of September 2026 and tracks 7,619 professional contacts across them, including 2,255 with verified work emails. The United States is the largest market and Washington the largest hub.

This list covers company matches for historical preservation organizations worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026. Country and city lists for historical preservation organizations follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
883Companies
7,619Contacts tracked
2,255Verified emails
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The 25 largest historical preservation organizations worldwide

Ranked by team size
Top 25 of 883 company matches for historical preservation organizations worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBoston, MA, United StatesHQ recorded Sep 20, 2026201-500463 contacts →

Exact match

“Founded by landscape architect Charles Eliot in 1891, The Trustees has, for more than 125 years, been a catalyst for important ideas, endeavors, and progress in Massachusetts.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchNeuilly-sur-seine, FranceHQ recorded Sep 20, 202651-200396 contacts →

Exact match

“Fondation du Patrimoine is a French non profit organization, created by law in 1996, to promote and raise funds to restore public and private heritage.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchWashington, DC, United StatesHQ recorded Sep 20, 2026201-500338 contacts →

Exact match

“For more than 75 years, the National Trust for Historic Preservation has led the movement to safeguard America’s historic places.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchMadison, WI, United StatesHQ recorded Sep 20, 2026201-500268 contacts →

Exact match

“Since 1846, the Wisconsin Historical Society has been on a mission to connect people to the past by collecting, preserving and sharing stories.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchApeldoorn, NetherlandsHQ recorded Sep 20, 2026201-500189 contacts →

Exact match

“History has been made at Paleis Het Loo and we are working hard to preserve it.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202651-200138 contacts →

Exact match

“World Monuments Fund (WMF) safeguards the world’s most treasured places to enrich people’s lives and build mutual understanding across cultures and communities.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchMadrid, SpainHQ recorded Sep 20, 2026501-1,000109 contacts →

Exact match

“KALAM is one of the most specialized and recognized companies for our work in historic preservation and building rehabilitation.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchWashington, DC, United StatesHQ recorded Sep 20, 202611-5097 contacts →

Exact match

“The American Battlefield Trust is a nonprofit organization that seeks to preserve our nation’s hallowed battlegrounds and educate the public about what happened there and why it…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchAmsterdam, NetherlandsHQ recorded Sep 20, 202651-20084 contacts →

Exact match

“Hendrick de Keyser’ behoudt al sinds 1918 architectonisch of historisch waardevolle huizen en hun interieur in Nederland.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 20, 202651-20080 contacts →

Exact match

“The Old Royal Naval College is the centrepiece of Maritime Greenwich, a UNESCO World Heritage Site with a long and celebrated 600-year history.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchAmersfoort, NetherlandsHQ recorded Sep 20, 202651-20074 contacts →

Exact match

“Nationaal Restauratiefonds biedt eigenaren en beheerders van monumenten financiële ondersteuning bij het restaureren en onderhouden van hun pand.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchCharleston, SC, United StatesHQ recorded Sep 20, 202651-20068 contacts →

Exact match

“Established in 1947, Historic Charleston Foundation is dedicated to preserving and protecting the architectural, historical and cultural character of Charleston and its Lowcountry…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchTarrytown, NY, United StatesHQ recorded Sep 20, 202651-20061 contacts →

Exact match

“Historic Hudson Valley, Westchester County’s largest cultural organization, educates and entertains more than visitors a year through school programs, tours of five National…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202611-5061 contacts →

Exact match

“The Institute of Classical Architecture & Art (ICAA) is a nonprofit membership organization committed to promoting and preserving the practice, understanding, and appreciation of…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchRichmond, VA, United StatesHQ recorded Sep 20, 202651-20057 contacts →

Exact match

“Since 1889, Preservation Virginia has preserved historic places and raised awareness of the importance of perpetuating and revitalizing Virginia's cultural, architectural and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchWarszawa, PolandHQ recorded Sep 20, 2026201-50054 contacts →

Exact match

“Naszą misją jest tworzenie podstaw dla zrównoważonej ochrony dziedzictwa kulturowego, by zachować jak najwięcej dla przyszłych pokoleń.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5054 contacts →

Exact match

“The Society for the Protection of Ancient Buildings.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchParis, FranceHQ recorded Sep 20, 202611-5054 contacts →

Exact match

“Créée en 1958 par Anne de Amodio et reconnue d’utilité publique en 1963, les VMF se consacrent à la sauvegarde et à la mise en valeur du patrimoine bâti et paysager depuis près de…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchAnnapolis, MD, United StatesHQ recorded Sep 20, 202611-5047 contacts →

Exact match

“Established in 1952, Historic Annapolis is the leading nonprofit preservation and history organization in Annapolis, MD.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 20, 2026n/a47 contacts →

Exact match

“Icon’s vision is for cultural heritage to be valued and accessible and for its future to be enhanced and safeguarded by excellence in conservation.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchIndianapolis, IN, United StatesHQ recorded Sep 20, 202611-5042 contacts →

Exact match

“A private nonprofit supported by a diverse membership base and guided by a volunteer board, Indiana Landmarks revitalizes communities, strengthens connections to our diverse…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchWashington, DC, United StatesHQ recorded Sep 20, 202611-5041 contacts →

Exact match

“The American Institute for Conservation (AIC) is the leading membership association for current and aspiring conservators and allied professionals who preserve cultural heritage.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchBelvidere, IL, United StatesHQ recorded Sep 20, 202651-20039 contacts →

Exact match

“A nationally recognized leader in the field of historical building restoration since 1992, we construct custom restoration solutions for historical homes, churches, universities…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchParis, United StatesHQ recorded Sep 20, 2026n/a39 contacts →

Exact match

“REMPART est une union d'associations qui œuvrent à la restauration et la préservation du patrimoine.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5037 contacts →

Exact match

“We represent the nation’s largest collection of independently owned historic houses and gardens.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 883 historical preservation organizations worldwide

See the full list, filter by size, metro and specialty, and access 2,255 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Historical preservation organizations worldwide at a glance

As of Sep 20, 2026
29.6%Verified-email coverage
8.6Average contacts per company
1-10Median size (employees)
2.0%Largest-city concentration · Washington
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
618
11-50
193
51-200
41
201-500
10
501-1,000
8
1,001-5,000
2

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for historical preservation organizations are linked below.
What qualifies
Company records worldwide whose business descriptions match “historical preservation organizations” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 2,255 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Historical preservation organizations by location

3 lists · largest first

Every Historical preservation organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “historical preservation organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many historical preservation organizations are there worldwide?

RevenueBase identified 883 company matches for historical preservation organizations worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

The Trustees Of Reservations tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most historical preservation organizations?

The United States leads with 471 companies, followed by the United Kingdom (43) and the Netherlands (28). Every historical preservation organizations list by country and city is linked on this page.

Which city has the most historical preservation organizations?

Washington leads with 18 company records, followed by New York (12) and London (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,255 professional contacts with verified work emails tracked across these 883 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.