The Oakland Coliseum, now called the O.co Coliseum, was built the same year as Angel Stadium, and it became the home of the Oakland Athletics in 1968. Featuring a unique underground design (the entire playing surface is actually below ground level), the coliseum is the oldest remaining multi-purpose stadium that is still used for more than one professional sport. The NFL’s Oakland Raiders also play here. The coliseum has been one of the Bay Area's most popular concert venues since it first opened. Past acts have included Marvin Gaye, Led Zeppelin and U2. The NBA's Golden State Warriors play in the adjacent Oracle Arena, which is part of the stadium complex.