Cruise aboard an air-conditioned 100-ft catamaran to the remote and historical seven-island cluster known as the Dry Tortugas, situated 70 miles west of Key West. The islands, surrounding reefs and waters make up the Dry Tortugas National Park; included within the park grounds is the Civil War-era Fort Jefferson, largest of the 19th-century coastal forts. Cruises include complimentary breakfast and lunch, guided fort tour and snorkel gear. Departing daily from the Key West Seaport.