Fodor's Expert Review Fort Wetherill State Park

This outcropping of stone cliffs at the tip of the southeastern peninsula has 26 picnic tables and walking paths with scenic overlooks. A fort since the Revolutionary War era, it served as a top-secret German prisoner-of-war camp during World War II; it was declared government surplus in the 1970s and later turned into a state park. Scuba divers favor this spot, and it is a gathering point for viewing tall-ship parades and America's Cup races. There's also a boat ramp. Public restrooms are open daily, April–October. Some visitors may feel safer exploring the ruins in a group rather than solo.