The earliest parts of Fyvie Castle date from the 13th century – some sources claim it was built in 1211 by William the Lion. Fyvie was the site of an open-air court held by Robert the Bruce, and Charles I lived there as a child.
Following the Battle of Otterburn in 1390, it ceased to be a royal stronghold and instead fell into the possession of five successive families, each of whom added a new tower to the castle. The oldest of these, the Preston tower (located on the far right as one faces the main facade of Fyvie), dates to between 1390 and 1433. The impressive Seton tower forms the entrance, and was erected in 1599 by Alexander Seton; Seton also commissioned the great processional staircase several years later. The Gordon tower followed in 1778 , and the Leith in 1890.
Inside, the castle stronghold features a great wheel stair, a display of original arms and armour, and a collection of portraits.
Manus O'Cahan and Montrose fought a successful minor battle against the Covenant Army at Fyvie Castle on October 28, 1644.
Following Victorian trends, the grounds and adjoining Loch Fyvie were landscaped in the 19th century. The Scottish industrialist Alexander Leith (later Baron Leith of Fyvie) bought the castle in 1885. It was sold to the National Trust for Scotland in 1984 by his descendants. Today the castle is open to the public.
The castle (like many places in Scotland) is said to be haunted. A story is told that in 1920 during renovation work the skeleton of a woman was discovered behind a bedroom wall. On the day the remains were laid to rest in Fyvie cemetery, the castle residents started to be plagued by strange noises and unexplained happenings.
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.