The Monument to 1300 Years of Bulgaria, also known as the Founders of the Bulgarian State Monument, is a large monument built on a plateau above the city of Shumen, Bulgaria. It was built in 1981 to commemorate the 1300th anniversary of the First Bulgarian Empire.
The monument is built in concrete in a Cubist style, and was designed by Bulgarian sculptors Krum Damyanov and Ivan Slavov. It is reached by a processional concrete stairway from Shumen, or by road. It stands at a height of 450 m above sea level and can be seen from 30 km away.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.