Sheathed in slabs of Spanish granite, marble, and limestone and capped with Iberian tiles, this hall is the ultramodern home of the National Orchestra of Spain and the National Chorus of Spain. Standing just north of Madrid's Salamanca district, it ranks as a major addition to the competitive circles of classical music in Europe. Inaugurated in 1988, it is devoted exclusively to the performances of symphonic, choral, and chamber music. In addition to the Auditorio Principal (Hall A), whose capacity is almost 2,300, there's a hall for chamber music (Hall B), as well as a small auditorium (seating 250) for intimate concerts.