Company lists · Data refreshed September 2026
Top 25 Nature preserves worldwide
RevenueBase identified 804 nature preserves worldwide as of September 2026 and tracks 28,581 professional contacts across them, including 6,752 with verified work emails. The United States is the largest market and Jackson the largest hub.
This list covers nature preserves worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026. Country and city lists for nature preserves follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest nature preserves worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,604 contacts → | ||||
Indirect evidence “Official account of Ontario Ministry of the Environment, Conservation and Parks.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 982 contacts → | ||||
Indirect evidence “As a world leading conservation and hospitality company, we are the proud custodians of our planet's most significant wild places, each chosen to be part of our Collection for a…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 625 contacts → | ||||
Indirect evidence “African Parks is a non-profit conservation organisation that takes on responsibility for the long-term management of protected areas in partnership with governments and local…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 588 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 585 contacts → | ||||
Indirect evidence “As America's largest non-profit conservation organization, the National Wildlife Federation works closely with those who span the social and political spectrum, but who are…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 554 contacts → | ||||
Partial evidence “Mass Audubon is the largest nature-based conservation organization in New England.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 157 contacts → | ||||
Partial evidence “The National Park Foundation works to protect wildlife and park lands, preserve history and culture, educate and engage youth, and connect people everywhere to the wonder of parks.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 151 contacts → | ||||
Partial evidence “Para la Naturaleza es una organización sin fines de lucro que integra a la sociedad en la conservación de sus ecosistemas naturales.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 126 contacts → | ||||
Partial evidence “We are the county’s leading conservation charity, committed to protecting wildlife and inspiring a lifelong love of nature.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 120 contacts → | ||||
Indirect evidence “Connaître - Protéger - Gérer - Valoriser - Accompagner.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 112 contacts → | ||||
Indirect evidence “Leave No Trace is a member-funded 501(c)(3) non-profit organization providing Leave No Trace programs, education, training, and outreach in all 50 states and more than 100…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 110 contacts → | ||||
Partial evidence “Only 90 minutes from Melbourne, Phillip Island Nature Parks attracts over 1.3 million visitors annually to its five ecotourism attractions including the Penguin Parade, the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 108 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 88 contacts → | ||||
Indirect evidence “At The Wilds, our mission is simple but powerful: Empowering People.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 86 contacts → | ||||
Partial evidence “In Het Nationale Park De Hoge Veluwe komen natuur, kunst en cultuur op een prachtige manier samen.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 83 contacts → | ||||
Indirect evidence “The Zoological Society of Milwaukee's mission is to conserve wildlife and endangered species, educate people about the importance of wildlife and the environment, and support the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 80 contacts → | ||||
Strong evidence “Natural Lands is dedicated to preserving and nurturing nature’s wonders while creating opportunities for joy and discovery in the outdoors for everyone.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 77 contacts → | ||||
Strong evidence “In 1995, the Anne Springs Close Greenway, a 2,100 acre nature preserve in Fort Mill, South Carolina, was dedicated to the public to serve as a natural buffer from urban…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 71 contacts → | ||||
Partial evidence “WWF's mission is to stop the degradation of our planet's natural environment, and build a future in which humans live in harmony with nature.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 67 contacts → | ||||
Indirect evidence “For 25 years, the Santa Valley Open Space Authority – in partnership with community members, nonprofits, and other agencies – has contributed to the quality of life in our…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 64 contacts → | ||||
Partial evidence “Founded in 1964, Delaware Nature Society works to improve the environment through conservation, advocacy, and education.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 63 contacts → | ||||
Strong evidence “McHenry County Conservation District exists to preserve, restore and manage natural areas and open spaces for their intrinsic value and for the benefits to present and future…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 60 contacts → | ||||
Partial evidence “As innovative protectors and stewards of the land since 1963, Openlands exists to create access to nature for all.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 58 contacts → | ||||
Indirect evidence “Espace reconnu comme exceptionnel pour sa biodiversité, ses paysages, son patrimoine, le Parc a pour missions de protéger et connaître, contribuer au développement local…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 57 contacts → | ||||
Partial evidence “Once a farm for the Schlitz Brewery draft horses, Schlitz Audubon Nature Center is Milwaukee’s comprehensive nature center.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: nature preserves. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names nature preserves.
- Partial evidence
- Its own public description names part of nature preserves, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name nature preserves. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 804 nature preserves worldwide
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Nature preserves worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among nature preserves, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for nature preserves are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “nature preserves”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names nature preserves), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among nature preserves, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 6,752 across the full list. 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.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Nature preserves by location
3 lists · largest firstEvery Nature preserves 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 Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names nature preserves, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many nature preserves are there worldwide?
RevenueBase identified 804 nature preserves worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Environment, Conservation And Parks Environnement, Protection DE LA Nature ET Parcs, headquartered in Toronto, tops this list with the largest team on record.
Which country has the most nature preserves?
The United States leads with 384 companies, followed by France (44) and Canada (33). Every nature preserves list by country and city is linked on this page.
Which city has the most nature preserves?
Jackson leads with 5 headquartered companies, followed by Houston (4) and Princeton (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 6,752 verified decision-maker contacts tracked across these 804 companies.
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 Smart Search, 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.