Visit Cádiz

River-beach city near the Jesuit ruins.

The port city, European Capital of Culture 2020, with the Trsat castle and the Rijeka carnival.

Slovenia's oldest town, a Roman settlement with a castle and the shaggy Kurent masks of carnival.

Greece's biggest carnival, the Rio-Antirrio bridge and the ferry port for Italy.

A hilltop colonial town of churches and artists, with the giant puppets of its Carnival.

Visit Barcelona, capital of Catalonia in Spain. See the Sagrada Familia (Antoni Gaudí's unfinished basilica with intricate facades and towering spires), stroll down La Rambla (tree-lined pedestrian street with street performers and La Boqueria market), explore Park Güel (Gaudí's whimsical public park with mosaic-covered structures and city views), and admire the Gothic Quarter (medieval streets with the Barcelona Cathedral and Roman ruins).

Visit Seville, capital of Andalusia in southern Spain. Explore the Real Alcázar (a UNESCO-listed Moorish palace with intricate tilework and gardens), climb the Giralda tower (former minaret of the Seville Cathedral, offering panoramic city views), stroll through the Barrio Santa Cruz (historic Jewish quarter with narrow streets and orange trees), and see a flamenco show at a traditional tablao.

Visit Valencia, Spain's third-largest city on the Mediterranean coast. Explore the futuristic City of Arts and Sciences complex (with its opera house, science museum, and Europe's largest aquarium), see the UNESCO-listed La Lonja de la Seda (15th-century silk exchange with Gothic architecture), stroll through the Turia Gardens (a 9km-long park in a former riverbed), and try paella valenciana (the original version with rabbit, chicken, and beans) at a local restaurant.