The oldest part of the Barcelona is known as the "Ciutat Vella," (shown here) and is divided into smaller neighborhoods. Though it's still characterized by tiny, winding streets from centuries ago, it's seen its share of changes. A few wider boulevards built in the 20th century bifurcate the old plan and in the late 1920s, the government tasked architect Adolf Florensa with restoring and reconstructing the Medieval core for the 1929 World's Fair. Photo 2 of 10 in A Five-Act History of Urbanism in Barcelona by Diana Budds

A Five-Act History of Urbanism in Barcelona

2 of 10

The oldest part of the Barcelona is known as the "Ciutat Vella," (shown here) and is divided into smaller neighborhoods. Though it's still characterized by tiny, winding streets from centuries ago, it's seen its share of changes. A few wider boulevards built in the 20th century bifurcate the old plan and in the late 1920s, the government tasked architect Adolf Florensa with restoring and reconstructing the Medieval core for the 1929 World's Fair.