were between thick. The, originally, four-story keep walls taper slightly to between thick. The walls are built in the buckel stone style out of a mixture of limestone and Nagelfluh, a conglomerate rock found in the area. The keep could be entered through a nearly high entrance on the courtyard side. To the north of the keep, next to the wall tower, is the castle gate with a gatehouse. The wide and high castle gate was built as a semi-circular entrance with rounded stones and soldiers carved as capitals on the columns. Currently, the castle gate is located at the upper end of the steeply inclined entry hall. The flat top of the hill was surrounded by a curtain wall. From the original fortified house with its blind arches and enclosed kitchen, located on the highest point of the cliff, the arches and portions of the wall are still visible in the outer wall. On the southside, about below the keep, a wide inner courtyard was located. Today this area is occupied by the Hall of Weapons. On the east side near the mill is a small wide opening in the wall, which was most likely a lower castle gate. The high outer curtain wall is the foundation of the modern castle building. In the north inner wall of the keep is a small opening, which likely was a hidden passage leading to the Danube. Sights The castle rooms on the tour are full of ornate furniture, paintings and valuable porcelain objects. The rooms give the visitor a taste of the lifestyle of the nobility in previous centuries. Collections of pre- and ancient historical objects are on display as well as works from swabian artists, carvers and metalworkers. The Hall of Weapons displays one of the largest private weapon collections in Europe, covering everything from the Middle Ages to modern times. The Marstall museum contains the princely fleet of carriages. The weapon collection The weapon collection in Schloss Sigmaringen contains over 3000 different examples of weapons and armor. Prince Karl Anton's passion for collecting weapons resulted in the creation of this collection. The collection shows the evolution of weapons from the 14th century to the 20th century. In addition to weapons, the collection also includes protective items such as shields, armor and handguns. Particularly noteworthy are such rare objects dating from the 15th century as a German multi-barrel gun, a