National Natural Landmarks Program

The National Natural Landmarks Program recognizes and encourages the conservation of sites that contain outstanding biological and geological resources.  Sites are designated by the Secretary of the Interior for their condition, illustrative character, rarity, diversity, and value to science and education.  The National Park Service administers the program and works cooperatively with landowners, managers and partners to promote conservation and appreciation of our nation's natural heritage.

View of sand dunes in foreground and trees in background

Three new landmarks designated!

The Secretary of the Interior designated three new National Natural Landmark sites in January 2021. Learn more here!

intricate cave features

International Year of Caves and Karst

2021 is the year to celebrate caves and karst landscapes! Learn more about NNLs with caves.

Link to 2020 Landmark Highlights article

2020 Landmark Highlights

Explore accomplishments at NNL sites during 2020!

person with camera next to fossil tree

NNL Videos

Kick back, make some popcorn, and enjoy a few short videos about the NNL program and some of the unique resources found at various NNLs.

Last updated: October 6, 2021

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