View larger size University Library Opposite the St. Peter’s Church is the University Library, which was designed by Josef Durm and built in 1901-05. This kind of library, featuring closed stacks, was new at the time; it combines functionality with representative architecture. Built from the red sandstone typical of the region, it reflects the Renaissance style of the Castle while integrating Art Nouveau elements. One of the library’s most precious treasures is the Codex Manesse, a medieval collection of handwritten songs.