ChamberÃÂ is a district of Madrid, Spain. It is further subdivided into six neighborhoods (Gaztambide, Arapiles, Trafalgar, Almagro, RÃÂos Rosas and Vallehermoso). The district junta is headquartered at the . The current urban outline was born as part of the Ensanche plan drafted by Carlos MarÃÂa de Castro (approved in 1860).