St. Peter’s church dates back to the 12th century. It was built as a three-nave Romanesque basilica on one of the highest elevations of the city, also a place that served as former execution grounds. The church was consecutively modified in the Gothic style due to frequent fires (1225, 1375, 1386, 1471, 1484). For a significant time, the church stood in the center of an affluent merchant district hence there was no scarcity of funds for construction. A large fire in 1728 left only the outside walls and the south tower standing. The church was then rebuilt in a Baroque style and the culmination of the efforts was the acquisition of a new Silbermann organ in 1735. Theodor Quentin substantially changed the interior of the church in 1895-96 who removed the empores and enlarged the site choirs deeper into the church nave, which became narrower.
The last pronounced changes were in 1974-83. Walls joined the side empores and the spacious areas behind them serve the needs of the parish. A glass wall separates the sanctuary. Friedrich Presse designed the sculptures adorning the bright white interior. However, the aesthetically interesting reconstruction lacks from the acoustic viewpoint. The church’s attractions include a 236-foot (72 m) high Peter’s tower with bells from 1487 and 1570 as well as the two story apartment of the fire watchman who resided there until the beginning of the 20th century.
References:Celje Castle was once the largest fortification on Slovenian territory. The first fortified building on the site (a Romanesque palace) was built in the first half of the 13th century by the Counts of Heunburg from Carinthia on the stony outcrop on the western side of the ridge where the castle stands. It had five sides, or four plus the southern side, which was a natural defence. The first written records of the castle date back to between 1125 and 1137; it was probably built by Count Gunter. In the western section of the castle, there was a building with several floors. Remains of the walls of this palatium have survived. In the eastern section, there was an enclosed courtyard with large water reservoirs. The eastern wall, which protects the castle from its most exposed side, was around three metres thicker than the rest of the curtain wall. The wall was topped with a parapet and protected walkway.