You can spend an afternoon studying the exhibits at Bunkier V-3 during your travels in Międzyrzec Podlaski. Take in the museums while you're in the area.
Podlasie Performance Hall is 0.9 mi (1.4 km) from central Siedlce, why not stop by during your stay. If you want to experience more of the culture Siedlce has to offer, head to Stanislawa Church, Miejski Park, and Siedlce Museum.