Buda Castle is the historical castle and palace complex of the Hungarian kings in Budapest, and was first completed in 1265. Buda Castle was built on the southern tip of Castle Hill, bounded on the north by what is known as the Castle District, which is famous for its medieval, Baroque, and 19th-century houses, churches, and public buildings. The castle is a part of the Budapest UNESCO World Heritage Site.
The first citizens arrived to Castle Hill in the 13th century after the Mongolian invasion, seeking protection in the hills of Buda. The first royal castle was built around this time. The golden age of Castle Hill was in the 15th century, following the marriage of King Matthias Corvinus and Beatrix of Naples in 1476. Many Italian artists and craftsmen accompanied the new queen, and Buda became an important European city. After the Turkish occupation, Buda was in ruins. A Baroque city was built, and Castle Hill soon became the district of government. During World War II, Buda was bombed to the ground and had to be rebuilt again.
Though Castle Hill has changed much since building began in the 13th century, its main streets still follow their medieval paths. Some houses date back to the 14th and 15th centuries, giving us an idea of what the Castle District may have looked like back then. Practically every house has a plaque indicating the century in which it was built, and providing details of its history. A surprising number of the buildings are still private homes, as Castle Hill is also a residential area.
Buda Castle Hill is also home to a large interconnected cellar system that consists of natural caves created by thermal waters and man-made passageways. Inhabitants have used the caverns for centuries for storage and shelter. The earliest traces of human life found here are 500,000 years old.
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.