The Guildhall is the house where the elected members of Derry City and Strabane District Council meet. It is a Grade A listed building.
The current building was preceded by an earlier town hall called the Market House which was built in the 17th century and destroyed in the Siege of Derry in 1689. The current building, which was designed by John Guy Ferguson and financed by The Honourable The Irish Society, was completed in 1890. The design for the clock tower was modelled on the Elizabeth Tower in London.
After a disastrous fire in 1908, in which only the tower and rear block survived, and more funding from The Honourable The Irish Society, the Guildhall was rebuilt to the design of Mathew Alexander Robinson in 1912. The current organ, which was designed by Sir Walter Parratt and has 3,132 pipes, was installed in 1914.
During The Troubles, the Guildhall was the focus of multiple terror attacks. The building was badly damaged by two bombs in 1972, but was restored at a cost of £1.7 million and reopened in 1977. On 23 September 1980 the Field Day Theatre Company presented its first production, the premiere of Brian Friel's Translations, in the Guildhall.
The guildhall, which had been the meeting place of the county borough of Londonderry for much of the 20th century, continued to be the local seat of government after the formation of Londonderry City Council in 1972; the council was renamed Derry City Council in 1984.
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.