Visit Veliko Tarnovo

Explore Carcassonne, a fortified medieval city in southern France. Walk the double ring of ramparts of the Cité de Carcassonne (a UNESCO World Heritage site with 52 towers), admire the Basilica of Saints Nazarius and Celsus (known for its 12th-century stained glass and Gothic choir), and cross the Pont Vieux (a 14th-century stone bridge offering panoramic views of the city).

Walk the medieval city walls, the Shambles’ overhanging shops and York Minster, the largest Gothic cathedral in northern Europe.

Crooked wooden wharf houses of the old Hanseatic trading quarter.

Red-sandstone castle ruin above the old town of Heidelberg and the Neckar valley.

Belarus’s best-preserved historic centre, with two castles above the Neman.

Fairytale medieval walled city, UNESCO-listed.

Moorish palace-fortress of Granada.

Historic fortress and the Crown Jewels.