To the west of La Castellana lie the districts of Chamberí and Tetuán, and to the east, the districts of Salamanca and Chamartín.
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As part of an ambitious project called Operación Chamartín, it is planned to extend it further to the north, where a big number of railway lines will be dug underground and the area will be transformed with high-rise buildings.
The attacks, consisting of coordinated bombings in Barajas Airport and the train stations of Atocha and Chamartín, killed 7 people and injured a further 100.
After Atocha itself was rebuilt in 1992, Chamartin lost much of its importance, even though since 2004 it has undergone changes to accommodate the new high-speed line to Valladolid.