The Holy Spirit Church at Marktplatz in the center of Old Town is one of the few buildings that survived the fire in 1693. The church was constructed in the first half of the 15th Century and was also used as a last resting place for electors. Murals, stemming from the middle ages, are most impressive. The church's gallery was formerly used as the university library, the Bibliotheca Palatina. This famous collection of scriptures and prints was stolen in the Thirty Years War and brought to the Vatican, where it still resides.