Istanbul is a major city in Turkey that straddles Europe and Asia across the Bosphorus Strait. Its Old City reflects cultural influences of the many empires that once ruled here. In the Sultanahmet district, the open-air, Roman-era Hippodrome was for centuries the site of chariot races, and Egyptian obelisks also remain. The iconic Byzantine Hagia Sophia features a soaring 6th-century dome and rare Christian mosaics.

Corfu, an island off Greece’s northwest coast in the Ionian Sea, is defined by rugged mountains and a resort-studded shoreline. Its cultural heritage reflects years spent under Venetian, French and British rule before it was united with Greece in 1864. Corfu Town, flanked by 2 imposing Venetian fortresses, features winding medieval lanes, a French-style arcade and the grand Palace of St. Michael and St. George.

Bari is a port city on the Adriatic Sea, and the capital of southern Italy’s Puglia region. Its mazelike old town, Barivecchia, occupies a headland between 2 harbors. Surrounded by narrow streets, the 11th-century Basilica di San Nicola, a key pilgrimage site, holds some of St. Nicholas’ remains. To the south, the Murat quarter has stately 19th-century architecture, a promenade and pedestrianized shopping areas.

Piraeus is a port city within the Athens urban area, in the Attica region of Greece. It is located eight kilometres southwest of Athens' city centre along the east coast of the Saronic Gulf in the Athens Riviera.

Izmir is a city on Turkey’s Aegean coast. Known as Smyrna in antiquity, it was founded by the Greeks, taken over by the Romans and rebuilt by Alexander the Great before becoming part of the Ottoman Empire in the 15th century. Today, its expansive archaeological sites include the Roman Agora of Smyrna, now an open-air museum. The hilltop Kadifekale, or Velvet Castle, built during Alexander’s reign, overlooks the city