Warsaw Chamber Opera (WOK) – small opera theatre in Aleja Solidarności 76B. Warsaw. It is located in the building of the first reformed evangelical church in town (1777). It is a historic building from 1775 with stylish, charming interior, it used to be the a Student Comedy Theatre (STS). The building of the Theatre is listed on the registry of monuments of Warsaw. Warsaw Chamber Opera (WOK) – small opera theatre in Aleja Solidarności 76B. Warsaw. It is located in the building of the first reformed evangelical church in town (1777). It is a historic building from 1775 with stylish, charming interior, it used to be the a Student Comedy Theatre (STS). The building of the Theatre is listed on the registry of monuments of Warsaw.