Barcelona is the capital city of the autonomous community of Catalonia in Spain and Spain's second most populated city, with a population of 1.6 million within its administrative limits.

Barcelona is the 10th-most-visited city in the world and the third most visited in Europe after London and Paris, with 8 million tourists every year since 2012.With its Rambles, Barcelona is ranked the most popular city to visit in Spain.

Barcelona is one of the world's leading tourist, economic, trade fair and cultural centers, and its influence in commerce, education, entertainment, media, fashion, science, and the arts all contribute to its status as one of the world's major global cities.It is a major cultural and economic center in southwestern Europe, 24th in the world (before Zürich, after Frankfurt) and a financial center.

The Barri Gòtic (Catalan for "Gothic Quarter") 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 modernista architecture (related to the movement known as Art Nouveau in the rest of Europe), developed between 1885 and 1950 and left an important legacy in Barcelona.


https://en.wikipedia.org/wiki/Barcelona#Main_sights