Over the years, many churches have been located in Biecz, the most ever being seven within the city limits. The most prominent of these is Corpus Christi Church ("Kościół Bożego Ciała"). The oldest surviving structures date back to 1480, but the register of monuments of the Kingdom of Poland show that construction had already begun by 1326. The main nave was constructed during the 15th century and completed by 1519. The side chapels were built between 1521 and 1560, and the main altar was added in 1604.