The Aarhus Theatre (Aarhus Teater) is the largest provincial theatre in Denmark. The present theatre house constructed in the late 19th century as a replacement for the old theatre, nicknamed 'Svedekassen'. Since Aarhus had grown to be Jutland's biggest city during the 19th century, the old theatre had become too small for the public. The new building was designed by the Danish architect Hack Kampmann (1856–1920), and the construction began on 12 August 1898. Only two years later the Theatre was completed, and it was inaugurated on 15 September 1900. The style of the building is Art Nouveau, with the national romantic emphasis on natural materials, and the interior was completed by artists Hansen-Reistrup and Hans Tegner.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.