Lotto Arena is an arena in Antwerp, Belgium. It has a seating capacity for 8,050 people for concerts and 5,218 for sporting events. The arena opened on 10 March 2007 after nine months of construction. It is located in the district of Merksem, adjacent to the Sportpaleis. The Antwerp Giants basketball club uses the arena as its home venue. It also hosts the European Open, a tennis tournament part of the ATP Tour 250 series.