Floors Castle is the seat of the Duke of Roxburghe. Despite its name it is an estate house rather than a fortress. It was built in the 1720s by the architect William Adam for Duke John, possibly incorporating an earlier tower house. In the 19th century it was embellished with turrets and battlements, designed by William Playfair, for The 6th Duke of Roxburghe. Floors has the common 18th-century layout of a main block with two symmetrical service wings.
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.