Traquair House is claimed to be the oldest continually inhabited house in Scotland. Whilst not strictly a castle, it is built in the style of a fortified mansion. It pre-dates the Scottish Baronial style of architecture, and may have been one of the influences on this style. The estate contains the famous Traquair Brewery.
The house is built on the site of a hunting seat used by the Scottish kings from the 12th century, though no part of the present building can be dated with certainty before the 15th century. Alexander I was the first Scottish king to stay and hunt at Traquair.
Over the next two centuries Traquair's ownership changed often, at times coming under the control of the English, and at others, the Scottish throne. Traquair remained the family seat of the Earls of Traquair from 1491 for the next four centuries.
Traquair is a 50-room house mainly dating from teh 16th-19th centuries. There is a Roman Catholic chapel built in 1829, following the Catholic emancipation. The 18th-century library contains more than 3,000 volumes. Although three lairds made alterations to the house prior to the 17th century, Traquair has changed little, architecturally, since then.
References:Celje Castle was once the largest fortification on Slovenian territory. The first fortified building on the site (a Romanesque palace) was built in the first half of the 13th century by the Counts of Heunburg from Carinthia on the stony outcrop on the western side of the ridge where the castle stands. It had five sides, or four plus the southern side, which was a natural defence. The first written records of the castle date back to between 1125 and 1137; it was probably built by Count Gunter. In the western section of the castle, there was a building with several floors. Remains of the walls of this palatium have survived. In the eastern section, there was an enclosed courtyard with large water reservoirs. The eastern wall, which protects the castle from its most exposed side, was around three metres thicker than the rest of the curtain wall. The wall was topped with a parapet and protected walkway.