The Holy Cross Church in the Benedictine Monastery of Holy Cross was rebuilt several times over the years. The present-day church and its mainly neoclassical interior date to the late 18th century. In addition to the church, you can also take a peek at the crypts, where you’ll see the mummified remains of nobleman Jeremi Michal Korybut, who died in 1651 at the ripe old age of 39.