Synagogue in Sankt Pölten

St. Pölten Church was built in the 12th century as an integral part of St. Pölten Abbey, founded in the 8th century. The building was transformed into a cathedral church in 1785, after the dissolution of the monastery by Leopold II.

Melk Abbey was founded in 1089 when Leopold II, Margrave of Austria, donated one of his castles to the Benedictine monks of Lambach Abbey. In the 12th century, a school was founded here and the abbey library soon became famous for its extensive collection of manuscripts. In the 15th century, the monastery became the centre of the reform movement known as the "Melk Reform", which helped to invigorate monastic life in Austria and southern Germany. The present Baroque abbey was built between 1702 and 1736 by the architect Jakob Prandtauer. The abbey church with its frescoes by Johann Michael Rottmayr and the library with its innumerable medieval manuscripts are particularly impressive.

The Piarist Church, also known as the Frauenbergkirche, is the oldest church in the city. Founded in the 13th century, the church owes most of its late Gothic appearance to reconstruction in the 15th century. In 1616, the church was ceded to the Jesuits and in 1776, to the Piarist order.