The parish church of Ják is the most complete Romanesque Church in Hungary. It was founded around 1220 and consecrated in honor of St. George in 1256. It was originally built as the church of a Benedictine monastery.
During the construction phase, the plans may have been changed several times, as shown by various irregularities. It has a troubled history: damaged by fire, storm, and the Ottoman army, it had to be restored several times.
Its most famous feature is the main entrance, which is recessed inward and has several sections, decorated with Norman motifs, and above which Jesus is depicted in the tympanum with angels and apostles. Opposite the main facade of the church, there is a small chapel. This is the Chapel of St. James, which in the Middle Ages was the church of Jac since the monastery church was not allowed to function as a parish church.
The rotunda has been built with 4 apses and 2 floors.
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.