Amsterdam earns sixth by combining canal-side walks with the Rijksmuseum and Van Gogh Museum at Museumplein. That pairing makes a coherent first visit: one part of the day can focus on art, another on the city’s streets and waterways.

It beats Lisbon on our preferred central walking-and-museum combination, but Istanbul’s layers of monuments and cross-continental setting give it the edge. Pick a museum anchor, then plan a canal walk around it. We rank the variety of a short visit, not nightlife or the number of famous artworks you can see.

Sources: I amsterdam · Photo: Basile Morin · CC BY-SA 4.0. Resized/recompressed; source license retained.