Barcelona contains both the authentically historic and the wildly bizarre. From the scenic trails of the colorful Park Güell to the romantic narrow alleys of Barri Gòtic; from the beachside nightclubs to the city's dozens of sacred churches and architectural marvels, this city by the sea seems to attract all types: the adventurer, the couple, the partier, the culture lover – and more – with an almost overwhelming variety of things to do. You could stay for a few days, but chances are you'll need a whole week to explore.

In Barcelona, even the beach is bustling, but it's really the cosmopolitan city that gets all the attention. Much of the activity revolves around Las Ramblas, a series of narrow streets and alleys packed with restaurants, nightclubs and a vibrant pedestrian market. But you should also take a tour of Antoni Gaudí's masterpieces; Gaudí is responsible for sites like Casa Milà, Casa Batlló and La Sagrada Familia. You also shouldn't miss out on the eclectic shopping scene and the region's exquisite food.