Whilst Key West, FL is the southernmost City, Dry Tortugas National Park seems to be the most out of the way National Park in the United States. 70 miles west of Key West, FL and known for Fort Jefferson, magnificent blue waters and superb coral reefs.
Reachable by boat or plane only, we opted for the 2 1/2 hour ferry service, which included the guided tour of Fort Jefferson and snorkel and fin rental, as well as breakfast on the way over and late lunch on the way back.
