This distinctive museum displays exhibits representing Ukraine’s national religions and is located with the Dominican Cathedral. The cathedral was originally constructed in the second half of the 13th century by Constance, the wife of Lev I of Galicia, in recognition of Lviv’s gracious Dominican monks. The museum opened in 1972 and was dedicated to the history of religion and atheism; the atheists have since left the building. There are more than 50 thousand exhibits and include a magnificent assembly of icons from the 16th-19th centuries, an impressive set of Torahs and Bibles and voluminous displays of Russian old prints. One of the museum’s most valuable pieces is Ivan Fyodorov's Ostroh Bible. Fyodorov, an exiled Muscovite, established Ukraine’s first printing press in Lviv. Works by numerous renowned theologians from Ukraine and abroad representing Catholicism, Orthodox Christianity, Judaism and other religions are on display in the library. An archaeological exhibition entitled “The Museum’s Treasure” is located in the cellar. The cathedral also hosts concerts and organ recitals.