Oberalteich Abbey, dedicated to Saints Peter and Paul, was founded in c. 1100 by Count Frederick of Bogen, a lord protector of Regensburg cathedral. After a serious fire in 1245 the premises were re-constructed under abbots Heimo (1247 to 1252) and Purchard (1256 to 1260). Under abbot Friedrich II (1346 to 1358) the abbey was fortified. The church was extensively altered in the time of abbot Johann II Asperger (1438 to 1463). The medieval monastery complex was modernised by abbot Veit Höser (1604 to 1634), which was followed by a total baroque refurbishment from 1682-1721.
The abbey was dissolved in 1803 during the secularisation of Bavaria, and the monastery buildings were disposed of. Accommodation for the local priest and a servant were set up in part of them.
The abbey church of Saints Peter and Paul was rebuilt between 1622 and 1630 and is richly decorated. The baroque high altar dates from 1693. The church of the former abbey became the parish church in 1803. In 1847 the tombs and monuments were removed from the church and taken to Vilshofen where they were used for the construction of a dam.References:
The city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.