A Roman aqueduct of 167 arches without mortar and the fairy-tale Alcazar that inspired Disney.
Lycian rock tombs above the harbour, the Blue Lagoon at Oludeniz and paragliding off Babadag.
Hungarian Art Nouveau at its most colourful: the town hall, the synagogue and Lake Palic.
The pistachio and baklava capital of Turkey and the Zeugma museum of Roman mosaics.
The Habsburg 'little Vienna' of Bukovina, with a UNESCO university that was once the Metropolitan's residence.
Coloured houses over the Onyar, the best-preserved Jewish quarter in Spain and Game of Thrones locations.
Rozafa castle above the largest lake in the Balkans, the bicycle city and the gateway to the Albanian Alps.
Hungary's largest church on a hill above the Danube bend, the old royal and religious capital.
The birthplace of Vlad the Impaler inside the best-preserved inhabited medieval citadel in Europe.
The Black Sea port of the Byzantine Comnenes, the Hagia Sophia of Trabzon and the Sumela monastery on a cliff.
The 'city of love' on a hill above the Alazani valley, inside 18th-century walls in the Kakheti wine region.
The 16th-century Mehmed Pasa Sokolovic bridge of Ivo Andric's Nobel novel, over the Drina.
A walled medieval town at the end of a fjord-like bay, with 1,350 steps up to the fortress of St John.
Nissi beach and the sea caves by day, the clubbing capital of the eastern Mediterranean by night.
A baroque old town at the meeting of three rivers, halfway between Vienna and Budapest.
Forty Byzantine churches on a rocky peninsula tied to the mainland by a causeway.
Master Paul's 18-metre carved altar, the tallest Gothic altar in the world, inside a walled Spis town.
A red-brick island castle in Lake Galve and the kibinai pastries of the Karaim community.
A German-built port on the Baltic, the ferry to the Curonian Spit and its sand dunes.
The Basilica del Pilar on the Ebro, Goya in the museums and the Aljaferia Moorish palace.
The Sedlec Ossuary decorated with 40,000 skeletons and the silver-mining cathedral of St Barbara.
A 12-kilometre sand beach, an old pirate town on a rock and the Ada Bojana river island.
The port city, European Capital of Culture 2020, with the Trsat castle and the Rijeka carnival.
'Here Portugal was born': the castle of the first king and a UNESCO medieval centre.
The ruined Art Nouveau casino on the Black Sea, a Roman mosaic and the beach resort of Mamaia.
A church on an island in an alpine lake, a castle on the cliff and cream cake on the shore.
The Vitkovice ironworks turned festival ground and the Stodolni street of a hundred bars.
The oldest city in Western Europe, founded by Phoenicians, with Carnival, beaches and the Atlantic on three sides.
The end of the Camino: the cathedral with the swinging Botafumeiro and pilgrims arriving in the Praza do Obradoiro.
Moldavia's old capital: the Palace of Culture, the Three Hierarchs church carved like lace and the oldest university in Romania.
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