Krevo Castle is one of the oldest Belarus castles and dates from the early 14th century. It is an important place in Belarus because it was the first all-stone castle to be built in the region. The stone walls were 2.5m thick and 13m high. The castle had two towers which guarded the rest of the fortress. Grand Duke Keistut was murdered in the castle in 1381, and in 1385 the famousKrevo Union (between Poland and the Grand Duchy of Lithuania) was signed here.
During the 16th century the Tatars and the Russians tried to capture the castle but it remained intact. By the early 19th century the castle was abandoned and the buildings were mostly destroyed during World War I. Today only the ruins of the castle remain. The perimeter walls can still be seen, but only a few fragments of the towers are still intact. There is a magnificent view of the ruins from the top of nearby Yuryeva Mountain.
Many legends surround the Krevo Castle ruins, including tales of an underground tunnel from the castle to Vilnius, and a beautiful princess who was bricked up alive in the castle walls. There is a pagan temple on Yuryeva Mountain and 1 of 4 amulet boulders, which used to lie at the entrance of Krevo to protect the town against trouble and disease, still remains.References:
The Petersberg Citadel is one of the largest extant early-modern citadels in Europe and covers the whole north-western part of the Erfurt city centre. It was built after 1665 on Petersberg hill and was in military use until 1963. It dates from a time when Erfurt was ruled by the Electors of Mainz and is a unique example of the European style of fortress construction. Beneath the citadel is an underground maze of passageways that can be visited on guided tours organised by Erfurt Tourist Office.
The citadel was originally built on the site of a medieval Benedictine Monastery and the earliest parts of the complex date from the 12th century. Erfurt has also been ruled by Sweden, Prussia, Napoleon, the German Empire, the Nazis, and post-World War II Soviet occupying forces, and it was part of the German Democratic Republic (East Germany). All of these regimes used Petersberg Citadel and had an influence on its development. The baroque fortress was in military use until 1963. Since German reunification in 1990, the citadel has undergone significant restoration and it is now open to the public as a historic site.