The Torre de la Malmuerta is a gate tower in Córdoba. It was built in 1406–1408, by order of King Henry III of Castile, over a pre-existing Almohad structure, to defend the gates of Rincón and Colodro. Later it was also used as a prison for nobles.
Having an octagonal plan, the tower has an annexed arch.
The names, meaning 'Tower of the Wrongly Dead Woman', refers to a woman who, according to a legend, was killed here by her husband after a false accusation of adultery.
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.