Once the largest city-fortress in the entire Republic of Venice, Zadar’s walls allowed it to retain more of its independence than most of its neighbouring cities, and meant that it was never captured by the Turks.
The most impressive gate of the walls was Land Gate - then the main entrance into the city - in the little Foša harbour, built by a Venetian architect Michele Sanmicheli in 1543. It is considered one of the finest monuments of the Renaissance in Dalmatia, and has the form of a triumphal arch with a central passage for wheeled traffic, and two smaller side arches for pedestrians. It is decorated with motifs such as St. Chrysogonus (Zadar’s main patron saint) on his horse, and the Shield of St. Mark (the coat of arms of the Republic of Venice). Previously, the area had been highly defensive, with a surrounding moat.
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.