Fairlie Castle is a restored oblong tower castle located on a natural rounded knoll situated above a precipitous section of the Fairlie Glen near the town of Fairlie in North Ayrshire. It was built by the now extinct family, the Fairlies of that Ilk and survives in a fairly good state of preservation.
Timothy Pont records that Fairlie was a strong tower with orchards and gardens. One source has it that Sir Robert Fairlie of that Ilk built the present castle in 1521, the family having held the lands since the fourteenth century. In around 1656-1660 the last of the Fairlie family sold the castle and barony to the Boyle family in the person of David, first Earl of Glasgow. Little Cumbrae Castle, Law Castle at West Kilbride and Fairlie Castle are all in the vicinity of the Firth of Clyde and have striking similarities.
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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.