The former gymnasium measures 565 m² (522 m² without the niche space) and is on the first floor. This spacious hall can be used as a free space, but with the existing stage elements it can easily be used for stage performances. The hall is accessed via an expansive staircase.
A 43 m² niche is ideal for the bar area or catering zone. The two artist dressing rooms can be accessed directly from the hall.
When using the entire Altes Hallenbad, up to 1,380 people can be accommodated, the capacity of the Hall and Living Room together is 1,140 persons.