Sarriod de la Tour Castle was originally a typical of the style built between the 10th and 12th centuries, and was greatly expanded by Jean Sarriod in 1420 and his son, Antoine, in 1478. The north wing's ground floor features a wooden-ceilinged 'Hall of Heads', named for its decorative motifs.
The Sarriod de la Tour Castle was the family residence of the Sarriod family since its founding. The Sarriods were politically linked to the powerful Bard family in the County of Savoy. The oldest part of the castle included a chapel and square tower, or donjon, surrounded by the castle walls. In 1420 Jean Sarriod expanded upon the 'turris Sariodorum', as the donjon was known. The 'Hall of Heads', built in 1430, features 171 corbels of grotesques of mythological monsters and animals bearing coats of arms.
In 1478 Jean's son, Antoine Sarriod de la Tour, refurbished the chapel dedicated to the Virgin Mary and Saint John the Evangelist, by having painted the external frescoes of the Crucifix and Saint Christopher and caused to be built the small bell tower. The castle wall's circular and semi-circular towers were added sometime in the late 15th century, when a new entrance was created on the eastern side. In the 16th century a west-facing wing was added, then, in the 17th century, a north tower. The Sarriod family inhabited the castle until 1923. In that year the castle went to the Genoese Bensa family. Since 1970, it has been property of the autonomous Region Aosta Valley.
Sarriod de la Tour is open to visitors year round.
References:Kristiansten Fortress was built to protect the city against attack from the east. Construction was finished in 1685. General Johan Caspar von Cicignon, who was chief inspector of kuks fortifications, was responsible for the new town plan of Trondheim after the great fire of 18 April 1681. He also made the plans for the construction of Kristiansten Fortress.
The fortress was built during the period from 1682 to 1684 and strengthened to a complete defence fortification in 1691 by building an advanced post Kristiandsands bastion in the east and in 1695 with the now vanished Møllenberg skanse by the river Nidelven. These fortifications were encircled by a continuous palisade and thereby connected to the fortified city. In 1750 the fortress was modernized with new bastions and casemates to protect against mortar artillery.