Münchenstein Castle is a landmark above the village. The ruins can still be visited and viewed, but are under private ownership.
Around 1260, the up-rising cavalier family Münch acquired the village on the hills adjacent to the river Birs and established their estate there. The exact dates of the castle erection remains unclear, but most likely building began in the time between 1260 and 1270.
The founders of the castle on the rock were the father and son Hugo II Münch and Hugo III Münch. Then, under Hugo Münch IV, the castle was expanded and extended and a ring wall was built around the village during the following 60 years. The cavalier Münch named themselves henceforth Münch von Münchenstein. After 1279 the village Geckingen was called Münchenstein. The Münchs were not able to keep the village and castle for long as their own property. During 1280 they had to hand over the ownership to the Graf von Pfirt, who then lent it to the Münchs in fief.
In March 1324, after the death of the last Graf on Pfirt, Ulrich III, the castle and the village of Münchenstein was inherited by the Herzog of Austria, as heiress Johanna von Pfirt (1300-1351) was married to Herzog Albrecht II von Habsburg (1298-1358).
In the year 1334, the castle was completed and was at its largest. A few years later, the castle was damaged by the Basel earthquake on 18 October 1356, but it was soon restored to its original condition. At this time Konrad VIII (1324-1378), son of Hartmann I Münch von Münchenstein resided in Münchenstein castle. Konrad VIII (called 'Hape') married Katharina, the hereditary daughter from Löwenburg, in 1340. Katharina Münch von Münchenstein-Löwenberg died in 1371 and Konrad VIII inherited governance of Muttenz and the three fortresses in the district Wartenburg.
During the 'Old Zürich War', just before the Battle of St. Jakob an der Birs on 26 August 1444, the Solothurner conquered the castle on 17 June 1444 and they kept it occupied. Not until the year 1469 did the Münchs get their estate back. During 1470, Konrad Münch von Münchenstein had to sell the deeds to the city of Basel, but because he was the city reeve, he was allowed to live there in fief.
During the first half of the 15th century, the dynasty of the Münchs began to crumble, and because of the high fiefdom costs, they had to sell the estate to the city. The village and castle were reigned for 283 years by the city of Basel. This reign ended, however, after the French revolution and village and castle were sold to the municipality Münchenstein, who themselves sold (passed on) the properties to the villagers. The castle was also sold and used as a stone quarry to build new houses.
The ruins of Münchenstein Castle are situated on a long, but narrow rock. There are only slender remains of the walls to be seen, these are directly above the centre of the village.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.