Halle Open
The International German Open has been played at the "Rothenbaum" since 1892, making it Germany's longest-running tennis tournament. The current stadium was built in 1999 and holds 13,200 spectators, making it Germany's largest tennis venue. Today, it is one of the only two tournaments on German soil to be part of the ATP World Tour 500 (the other being Halle Open), and one of the twenty largest tennis tournaments in the world.