Plovdiv, one of the oldest continuously inhabited cities in Europe, carries over 8,000 years of history layered into its streets. The Roman Theater, still in use today, was discovered by accident in the 1970s and now hosts operas and concerts overlooking the Rhodope Mountains. Nearby, visitors can walk the remains of a Roman stadium buried beneath the main pedestrian street, where modern shops and cafés stand above ancient foundations.

The capital of Crete, Heraklion is a Greek port city and a popular stop on Mediterranean and Greek cruises. The city is an historical marvel, replete with archaeological wonders and remnants of the region's past. Highlights include the Heraklion Archaeological Museum, the Rocca a Mare Fortress, the Venetian Loggia, and just past the city limits, the Palace of Knossos.

Jaisalmer, known as the "Golden City" of India, rises from the sands of the Thar Desert with a breathtaking display of medieval architecture and vibrant culture. Dominated by its imposing fort, the Jaisalmer Fort, a UNESCO World Heritage Site, this city is a striking example of Rajput architecture.

Italy’s port city of Brindisi, tucked along the Adriatic coast in the Puglia region, has been a gateway to the East for over two thousand years. Once the Roman Empire’s main departure point for the Via Appia, the road to Greece and beyond, Brindisi still bears traces of its ancient past, from Roman columns to remnants of old harbors that once welcomed traders, pilgrims, and soldiers.

Seen from the train, Durham presents a magnificent sight, with cathedral and castle perched atop a bluff enclosed by a loop of the River Wera, and linked to the suburbs by a series of sturdy bridges.