Foulis Castle is a white washed mansion that incorporates an old tower house with gun loops. The castle was held by the Clan Munro from the 12th century or earlier and they had a stronghold there. The remains of an 11th-century Motte (man-made mound topped by a wooden palisade), believed to be the very first fortification at Foulis, still remain in the castle grounds today.
Foulis Castle itself is mentioned briefly in records that date back to the 14th century although the original Tower of Foulis was believed to have been built in 1154. In 1542 Donald Mackay of Strathnaver, chief of the Clan Mackay was imprisoned in Foulis Castle, when he was captured after the Battle of Alltan-Beath.
The castle survived up to the 18th century until it was attacked by Jacobites in 1746. Sir Robert Munro, 6th Baronet was killed at the Battle of Falkirk Muir in 1746 and the castle was sacked and burned by the Jacobites in the same year. Robert's son the next successive chief, Sir Harry Munro, 7th Baronet returned home from captivity to find the castle had been set on fire and much of the castle had been destroyed. The Jacobites were defeated just a few months later by Government forces at the Battle of Culloden. Sir Harry Munro set about rebuilding the castle incorporating what he could of the original building. However as the Battle of Culloden had brought a complete end to the Highland clan system there was no need for such a defensive fort anymore. As with many castles at this time it was re-built as a large mansion house as we see it today. The castle was re-built as a large classical mansion between 1754 and 1792. Foulis Castle still remains the home of the Chief of Munro, Hector W Munro of Foulis.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.