Avinguda Diagonal is the name of one of Barcelona's broadest and most important avenues. It cuts the city in two, diagonally with respect to the grid pattern of the surrounding streets, hence the name.

The Eixample is a district of Barcelona between the old city and what were once surrounding small towns, constructed in the 19th and early 20th centuries. Its population was 262,000 at the last census (2005).