The Berliner Philharmonie is a concert hall in Berlin, home to the Berlin Philharmonic Orchestra. The Philharmonie lies on the south edge of the city's Tiergarten and just west of the former Berlin Wall. The Philharmonie is on Herbert-von-Karajan-Straße, named for the orchestra's longest-serving principal conductor. The building forms part of the Kulturforum complex of cultural institutions close to Potsdamer Platz. The Philharmonie consists of two venues, the Grand Hall (Großer Saal) with 2,440 seats and the Chamber Music Hall (Kammermusiksaal) with 1,180 seats. Though conceived together, the smaller hall was opened in the 1980s, some twenty years after the main building.