The Gunnebo estate consists of a main building from the end of the 18th century, built by John Hall, and drawn by city architect Carl Wilhelm Carlberg in a Neoclassical architecture. Gunnebo has one of Sweden's finest and best preserved baroque gardens. The 18th century interior was recreated in the 1950s, when Mölndal Municipality bought the estate. The last private owner, Mrs. Hilda Sparre, died in 1948. Several original furnishings were brought back to Gunnebo during the 20th century.
Both king Gustav III of Sweden and Marie Thérèse of France visited the Hall family at Gunnebo. King Gustav V visited Hilda Sparre at the House in the early 20th century. In June 2001 guests of the EU-summit in Gothenburg, among whom United States president George W Bush, visited Gunnebo House.
The parks are open to the public and the interior of the House can be seen with a guided tour. Guided tours are offered for visitors the year around and there is also a shop and a restaurant. Every summer, an open air theatre is held in the gardens.
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.