Located on the other side of La Meridiana from the rest of Sant Andreu, the neighbourhood of El Congrés i Els Indians is one of the most densely populated parts of the district with a population of 13,000 crammed into just 40 hectares.
Most of the inhabitants live in the area known as El Congrés, which dates from 1952 when XXXV Congrés Eucarístic Internacional de Barcelona was held between May 26 and June 1.
This was one of the most important religious events of its day and 49 cardenals, 225 archbishops, bishops and abbots and 20,000 priest and Catholic officials were amongst the 300,000 attendees.
In order to celebrate the event Doctor Modrego, Bishop of Barcelona, decided to create a neighbourhood to house working class families, particularly those who were amongst the influx of immigrants who had arrived in Barcelona from other parts of Spain.
The most important terrain was Can Ros, a masia owned by the Ros i de
Ramis family, who sold 16 hectares of land to the Patronat d'Habitatges
del Congrés Eucarístic.
Having received the required permissions from the Ayuntamiento, building work began under architect Josep Soteras Amase in 1953.
The main centres of the neighbourhood were Plaça del Congrés Eucarístic and Plaça del Doctor Modrego whilst the parish church of Sant Pius X in Plaça del Congrés was included in the project but not actually built until some years later.
This first stage was completed in 1954 and a second building phase was completed in 1968.
The neighbourhood of El Congrés i Els Indians also includes an area known as Els Indians, which includes somewhat finer houses built in the late 19th century by rich Barcelonans who had made their fortunes in the Americas.