Medvėgalis was a 14th-century hill fort in Samogitia, located in present-day Šilalė District Municipality. It was first mentioned in 1316 in written texts and was one of the most important and strongest Lithuanian forts in the area. It was attacked by the Teutonic Knights over 20 times throughout history, including the Siege of Medvėgalis in 1329, when it fell to the Teutonic forces and its defenders were converted to Catholicism.
The settlement at the hill fort complex lies to the southwest and northeast of the fort. It was put in order in 2006 by the Varniai Regional Park and the Ministry of Environment. The fort was the subject of a poem by the poet Maironis.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.