St. John the Baptist Church is considered to be the acme of the Yaroslavl school of architecture. It was built in 1671-1687 on the bank of Kotorosl river. Its walls and dome drums are covered with richly glazed tiles; the temple's fifteen onion domes are assembled in three groups. The 7-storey, 45-metre high bell-tower was built later than the church itself in mid-1690s. The entire interior is covered with frescoes depicting Christian saints, St. John the Baptist hagiography and biblical topics. They were painted by Dmitry Plekhanov and Fyodor Ignatyev in 1694-1695.
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.