As the name suggests, Iso Paja (the big workshop) once functioned as a large metal workshop, where e.g. Billnäs famous tools were produced. Renovated with respect for history, the space is today perfectly suited for organizing events that require a large space. Iso Paja is Billnäs Ruukki’s most popular venue for wedding receptions.

In addition to weddings, Iso Paja has organized concerts, fashion shows, TV productions, fairs and various corporate events.