L'illa Diagonal was known originally as the "Supermanzana", since its opening in 1993 has become an epicenter of commerce and life in Barcelona.
In addition to a large mall with over 170 shops and restaurants, the resort facilities including L'illa Diagonal on its premises two four-star hotels, two schools, a sports hall, a nightclub and concert hall, a convention center, a public park and parking.
The building has a facade of 334 meters and the form of lying is inspired skyscraper in Rockefeller Center in New York. The building height is between 40 and 60 meters on each end and 30 meters in the middle.