Galle, a coastal city in southern Sri Lanka, is a place where history and the sea are inseparably linked. Once a vital port on the spice trade routes, Galle reached its peak under Dutch colonial rule in the 17th century, when the massive Galle Fort was built.

Yucatán, a Mexican state, is popular for its Gulf of Mexico beach areas and spectacular Mayan ruins. It is bordered by the states of Campeche and Quintana Roo.

Kos, an enchanting island in Greece’s Dodecanese archipelago, is a gem steeped in both history and natural beauty. Known as the birthplace of Hippocrates, the father of modern medicine, Kos is home to the ancient Asclepeion, a healing temple where Hippocrates taught his students. Visitors can wander through the well-preserved ruins and enjoy sweeping views over the island and the Aegean Sea.

Seven miles outside of historic Athens, the Greek coastal city of Piraeus lies upon the sparkling waters of the Aegean Sea and is the largest passenger port in Europe, servicing nearly 20 million passengers per year.

Warnemunde (or Warnemünde) is a port city in Germany and a frequent stop on many Northern European cruises. Across the Baltic Sea from Denmark's capital, Copenhagen, this charming seaside city has a number of delightful attractions, including the Warnemünde Lighthouse, a variety of local shops along the marina, and surfing lessons on the beach.