Barcelona is today one of the world's leading tourist, economic, trade fair/exhibitions and cultural-sports centres, and its influences in commerce, education, entertainment, media, fashion, science, and the arts all contribute to its status as one of the world's major global cities.

Founded as a Roman city, Barcelona became the capital of the Counts of Barcelona. After merging with the Kingdom of Aragon, it became one of the most important cities of the Crown of Aragon. Besieged several times during its history, Barcelona is today an important cultural centre and a major tourist destination and has a rich cultural heritage. Particularly renowned are architectural works of Antoni Gaudí and Lluís Domènech i Montaner that have been designated UNESCO World Heritage Sites. The city is well known in recent times for the 1992 Summer Olympics. The headquarters of the Union for the Mediterranean is located in Barcelona.

The Barri Gòtic ("Gothic Quarter" in Catalan) is the center of the old city of Barcelona. Many of the buildings date from medieval times, some from as far back as the Roman settlement of Barcelona. Catalan modernisme architecture (often known as Art Nouveau in the rest of Europe), developed between 1885 and 1950 and left an important legacy in Barcelona. A great number of these buildings are World Heritage Sites. Especially remarkable is the work of architect Antoni Gaudí, which can be seen throughout the city. His best known work is the immense but still unfinished church of the Sagrada Família, which has been under construction since 1882, and is still financed by private donations. As of 2007, completion is planned for 2026.

Barcelona was also home to Mies van der Rohe's Barcelona Pavilion. Designed in 1929 for the International Exposition for Germany, it is an iconic building that came to symbolize modern architecture as the embodiment of van der Rohe's aphorisms "less is more" and "God is in the details." The Barcelona pavilion was intended as a temporary structure, and was torn down in 1930 less than a year after it was constructed. A modern re-creation by Spanish architects now stands in Barcelona, however, constructed in 1986.

Barcelona contains seven beaches, totalling 4.5 km (2.8 mi) of coastline. Sant Sebastià and Barceloneta beaches, both 1,100 m (3,610 ft) in lengthare the largest, oldest and the most frequented beaches in Barcelona. The Olympic Port separates them from the other city beaches: Nova Icària, Bogatell, Mar Bella, Nova Mar Bella and Llevant.

Barcelona Sightseeing
Barcelona Food
Barcelona Shopping