Spain's second-largest city is also its most cosmopolitan and avant-garde, a rich repository of landmark buildings and world-class cultural centers that range from its famed moderniste Sagrada Família and great medieval Gothic cathedral to the MNAC's Romanesque treasures and Picasso Museum's cubist masterpieces.

Cutting through the heart of its emblematic Old Quarter is the tree-lined promenade of La Rambla, a former riverbed that today is a vibrant, colorful thoroughfare perennially packed with visitors of all nations. Three of our walking tours take you on strolls through the medieval labyrinths on either side of this emblematic paseo. The fourth leads you out into the spacious Eixample to explore its long, wide boulevards and surreal 19th-century edifices

Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.