Barcelona, the capital of Catalonia, is a Mediterranean and cosmopolitan city with Roman remains, medieval quarters and examples of 20th century modernism and avant-garde. Constructions by the Catalan architects Antoni Gaudí and Lluís Doménech i Montaner have been declared World Heritage Sites by the UNESCO. Its long history and economic dynamism have made Barcelona a cultural city, which can be seen in the historic-artistic heritage and the promotion of artistic trends. A wide cultural programme will take visitors to museums, exhibitions, open-air sculptures, and many concerts, plays and dances. Its transport connections, the Mediterranean climate and the multitude of attractions for visitors make Barcelona one of the world’s leading business cities. Business parks, exhibition and conference centres host a wide range of initiatives.