These 330 acres of protected land are where David Thompson established the first permanent European settlement in what is now New Hampshire. Several nature trails with informative panels describe the park's military history, and you can enjoy vistas of the nearby Isles of Shoals. The rocky shore's tidal pools shelter crabs, periwinkles, and sea anemones. Throughout the year, the Seacoast Science Center hosts exhibits on the area's natural history. The tidal-pool touch tank and 1,000-gallon Gulf of Maine deepwater aquarium are popular with kids. There are also guided nature walks.