Portsmouth is a port city and naval base on England’s south coast, mostly spread across Portsea Island. It’s known for its maritime heritage and Portsmouth Historic Dockyard. The dockyard is home to the interactive National Museum of the Royal Navy, the wooden warship HMS Victory, where Nelson died in the Battle of Trafalgar, and HMS Warrior 1860.

The Port of Gibraltar, also known as Gibraltar Harbour, is a seaport in the British Overseas Territory of Gibraltar. It was a strategically important location during the Napoleonic Wars and after 1869 served as a supply point for ships travelling to India through the Suez Canal.

Mahón, or Maó, is the capital of the Spanish island of Menorca. It’s known for its British-style Georgian houses and sheltered harbor. Santa María Church, with an ornate 19th-century organ, sits on central Plaça de la Constitució. Next to the church, the city hall has a Renaissance facade and a clock donated by the island’s first British governor.

Syracuse is a city on the Ionian coast of Sicily, Italy. It's known for its ancient ruins. The central Archaeological Park Neapolis comprises the Roman Amphitheater, the Teatro Greco and the Orecchio di Dionisio, a limestone cave shaped like a human ear.

Katakolo is a seaside town in the municipality of Pyrgos in western Elis, Greece. It is situated on a headland overlooking the Ionian Sea and separating the Gulf of Kyparissia from the rest of the Ionian. It is 11 km west of Pyrgos.

Valletta (or Il-Belt) is the tiny capital of the Mediterranean island nation of Malta. The walled city was established in the 1500s on a peninsula by the Knights of St. John, a Roman Catholic order. It’s known for museums, palaces and grand churches. Baroque landmarks include St. John’s Co-Cathedral, whose opulent interior is home to the Caravaggio masterpiece "The Beheading of Saint John."

Tangier, a Moroccan port on the Strait of Gibraltar, has been a strategic gateway between Africa and Europe since Phoenician times. Its whitewashed hillside medina is home to the Dar el Makhzen, a palace of the sultans that's now a museum of Moroccan artifacts. The American Legation Museum, also in the medina, documents early diplomatic relations between the U.S. and Morocco in an 1821 Moorish-style former consulate.

Portsmouth is a port city and naval base on England’s south coast, mostly spread across Portsea Island. It’s known for its maritime heritage and Portsmouth Historic Dockyard. The dockyard is home to the interactive National Museum of the Royal Navy, the wooden warship HMS Victory, where Nelson died in the Battle of Trafalgar, and HMS Warrior 1860.