Martin Luther's Birth House (Martin Luthers Geburtshaus) is a museum in Eisleben, Germany. The actual house in which Luther was born no longer exists, it having been burnt completely to the ground in 1689.
The German religious reformer Martin Luther was born there in 1483. Opened to the public in 1693, it is a World Heritage Site. In 2005-2007 an expansion was added for visitors; the ensemble has since received five architectural awards.
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.