Found in the longest street in the Old Town (ul. Piwna, 250m long, for all you eager beavers), St Martin's Church was founded in 1356 by the Duke of Mazovia Ziemowit and his wife Euphemia. It has been repeatedly reconstructed in the Baroque style, however, following destruction in 1944, the Baroque interior was not rebuilt and now it is largely modern, with the only surviving original element being the partially burned crucifix in the main nave. The church played a part in the resistance movement of the 1970s and 80s where opposition members would gather for meetings, or run to for refuge following police actions to disperse protestors. The church is open from 15:00 till the last devotion (around 20:00) and during masses.