The Church of St Paraskeva is a Bulgarian Orthodox church in Sofia. The church, dedicated to Saint Paraskeva, is located on 58 Georgi Rakovski Street in the centre of the city. It is the third-largest church in Sofia.
Plans to build a church at the site date to 1910, when Stuttgart-educated Bulgarian architect Anton Tornyov (1868–1942) won a competition for the church's design. Due to the Balkan Wars and World War I, however, the construction was postponed. In 1922, the church board of trustees announced another competition, which was again won by Tornyov. The construction of the Church of St Paraskeva was complete by 1930, but the finishing works on the porticos did not cease until 1940.
St Paraskeva has a somewhat unusual design for an Eastern Orthodox church. For example, the cella is in practice a round chamber over 20 metres in diameter. The cella gradually disintegrates into the surrounding apses.
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.