Barcelona, the cosmopolitan capital of Spain’s Catalonia region, is known for its art and architecture. The fantastical Sagrada Família church and other modernist landmarks designed by Antoni Gaudí dot the city. Museu Picasso and Fundació Joan Miró feature modern art by their namesakes. City history museum MUHBA, includes several Roman archaeological sites.

Amsterdam is the Netherlands’ capital, known for its artistic heritage, elaborate canal system and narrow houses with gabled facades, legacies of the city’s 17th-century Golden Age. Its Museum District houses the Van Gogh Museum, works by Rembrandt and Vermeer at the Rijksmuseum, and modern art at the Stedelijk.

New York City comprises 5 boroughs sitting where the Hudson River meets the Atlantic Ocean. At its core is Manhattan, a densely populated borough that’s among the world’s major commercial, financial and cultural centers.

Chicago, on Lake Michigan in Illinois, is among the largest cities in the U.S. Famed for its bold architecture, it has a skyline punctuated by skyscrapers such as the iconic John Hancock Center, 1,451-ft. Willis Tower (formerly the Sears Tower) and the neo-Gothic Tribune Tower.