The Venetian arsenal at Gouvia was a shipyard built by the Republic of Venice during their rule over the island of Corfu. It was located on the west side of what used to be called 'Govino Bay', the current location of the modern village of Gouvia.
The arsenal was built in 1716 as part of defenses against the Ottomans. It was abandoned by the Venetians in 1798, when the Venetian Republic ceased to exist.
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.