National Natural Landmarks Program

The National Natural Landmarks Program recognizes and encourages the voluntary 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.

a collage of diverse national natural landmarks with geologic formations, coastal formations & swamp
Find a National Natural Landmark

Explore the directory of National Natural Landmarks.

golden fields on a rolling hill
About National Natural Landmarks

Learn what National Natural Landmarks are, how they're designated, and more about the program.

drawing of otters in glacial water
Explore Our Natural Heritage

Explore NNLs by the natural features they were designated for.

a calm body of water with a dry hilly landscape beyond
National Natural Landmark Stories

Read news and stories about National Natural Landmarks

Last updated: December 3, 2025

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