Knockalla Fort is one of several Napoleonic batteries built along the shores of Lough Swilly in county Donegal, to defend the north west of Ireland. It was part of a scheme to fortify Lough Swilly and Lough Foyle against French Invasion during the Revolutionary and Napoleonic Wars and was completed between 1812 and 1813. On the other side of the Lough is Fort Dunree. The fort was built on the site of a temporary fortification first built in 1798.
It is triangular in shape with a tower on the landward salient angle. From the tower, the two walls of the fort, protected by a dry moat partly cut into the rock, lead down to the edge of steep rocky cliffs, where there are batteries on two levels. The lower battery with seven gun emplacements, originally mounted French 42 Pounder smooth bore guns on traversing platforms. The upper level contains barrack accommodation, magazine, casemates, entrance gateway and an upper battery for two 24 Pounder smooth bore guns on the northern flank of this level. The tower is quadrant-shaped in plan with corners rounded off and was armed with a 24 Pounder gun and a 5.5-inch howitzer.
After the end of the Napoleonic Wars the defences were neglected and not updated. By the 1860s the Fort was armed with an 18 Pounder gun and 5.5-inch howitzer in the tower. The upper battery had a 24 pounder gun. By this time the Fort was obsolete and was disarmed and abandoned by the military in the 1870s.
The fort remains substantially intact, and is now in use as a private residence.
References:Rosenborg Palace was built in the period 1606-34 as Christian IV’s summerhouse just outside the ramparts of Copenhagen. Christian IV was very fond of the palace and often stayed at the castle when he resided in Copenhagen, and it was here that he died in 1648. After his death, the palace passed to his son King Frederik III, who together with his queen, Sophie Amalie, carried out several types of modernisation.
The last king who used the place as a residence was Frederik IV, and around 1720, Rosenborg was abandoned in favor of Frederiksborg Palace.Through the 1700s, considerable art treasures were collected at Rosenborg Castle, among other things items from the estates of deceased royalty and from Christiansborg after the fire there in 1794.
Soon the idea of a museum arose, and that was realised in 1833, which is The Royal Danish Collection’s official year of establishment.