Barclays Arena (originally known as the Color Line Arena and formerly known as barclaycard arena and O2 World Hamburg) is a multipurpose arena in Hamburg, Germany. It opened in 2002 and can hold up to 16,000 people (13,800 or 12,947 for sporting events). It is located at Altona Volkspark, adjacent to the football stadium Volksparkstadion and the Volksbank Arena in Hamburg's western Bahrenfeld district.