Have you ever thought of traversing an entire ocean from coast to coast? You can go further than you ever thought possible on a transatlantic cruise, crossing the waves between the U.S. and Europe. Departing from Florida, Barcelona, Southampton and Copenhagen, these cruises include both tropical and cultural island stops, in ports such as the Bahamas, Puerto Rico, Greenland and Iceland. Meanwhile, transpacific cruises go from Sydney to the U.S., with plenty of white-sand-beach-filled South Pacific ports in between. Take in sweeping views of the Pacific while stopping in exotic ports to see the secluded beaches of Vanuatu or the volcanic vistas of Hawaii.