 Because a ball house was usually designed with as spectator gallery around an arena, they were often used by travelling theater companies in 17th-century Europe.Because both ball houses, Stora Bollhuset and Lilla Bollhuset in Stockholm were used by theater companies during the same period, it is difficult to establish which particular building was used by which company at which occasion, and there are some confusion about the theatrical activity during this first period.It is further more confusing because a third building, Lejonkulan, was also used by the travelling theater companies during the same period.