List of national lakeshores and seashores of the United States
The United States has ten protected areas known as national seashores and three known as national lakeshores, which are public lands operated by the National Park Service (NPS), an agency of the Department of the Interior. National seashores and lakeshores are coastal areas federally designated by Congress as being of natural and recreational significance as a preserved area.
Source: Wikipedia — List of national lakeshores and seashores of the United States (CC BY-SA 4.0)