Graz is an indoor arena in Graz, Austria. It currently holds 5,000 spectators and it hosts indoor sporting events such as tennis and basketball. It hosted the 1994 Davis Cup tennis match between Austria and Germany
Vienna is the main court used at the Erste Bank Open 500 Championship. Wiener Stadthalle has hosted the ATP World Tour since 1990, played on a hard court it is referred to as the Vienna Open.