Fodor's Expert Review Falling Waters State Park

This site of a Civil War–era whiskey distillery and, later, an exotic plant nursery (some species still thrive in the wild) is now best known as the site of the Falling Waters Sink. The 100-foot-deep cylindrical pit provides the background for a waterfall, and there's an observation deck for viewing this natural phenomenon. The water free-falls 73 feet to the bottom of the sink, but where it goes after that is a mystery. Once you've seen the cascade, stay for the birding—more than 100 species have been seen here. Campsites are available.