Barcelona-Perdrera-00

Barcelona (Catalan: [bərsəˈɫonə], Spanish: [barθeˈlona]) is the second largest city in Spain after Madrid, and the capital of Catalonia, with a population of 1,621,537 within its administrative limits on a land area of 101.4 km² (39 sq mi). The urban area of Barcelona extends beyond the administrative city limits with a population of between 4,200,000 and 4,500,000 on an area of 803 km² (310 sq mi), being the sixth-most populous urban area in the European Union after Paris, London, Ruhr area, Madrid and Milan. About five million people live in the Barcelona metropolitan area. It is also Europe's largest metropolis on the Mediterranean coast. It is the main component of an administrative area of Greater Barcelona, with a population of 3,218,071 in an area of 636 km² (density 5,060 hab/km²). It is located on the Mediterranean coast between the mouths of the rivers Llobregat and Besòs and is bounded to the west by the Serra de Collserola ridge (512 m/1,680 ft).

Casa Milà (Catalan pronunciation: [ˈkazə miˈɫa]), better known as La Pedrera (pronounced: [ɫə pəˈðɾeɾə], meaning the 'The Quarry'), is a building designed by the Catalan architect Antoni Gaudí and built during the years 1905–1910, being considered officially completed in 1912. It is located at 92, Passeig de Gràcia (passeig is Catalan for promenade) in the Eixample district of Barcelona, Catalonia, Spain.

It was a controversial design at the time for the bold forms of the undulating stone facade and wrought iron decoration of the balconies and windows, designed largely by Josep Maria Jujol, who also created some of the plaster ceilings.

Architecturally it is considered an innovative work for its steel structure and curtain walls – the façade is self-supporting. Other innovative elements were the construction of underground car parking and separate lifts and stairs for the owners and their servants.

In 1984, it was declared World Heritage by UNESCO. The building is made open to the public by the CatalunyaCaixa Foundation, which manages the various exhibitions and activities and visits to the interior and roof.