Knock Castle is a four-storey, 16th century ruined tower house located on Knock Hill to the West of Ballater.
A Z-plan tower house, built in 1590. Former laird, John Gordon, was a notable Jacobite.
The Doune of Invernochty is an earthwork castle dating from around 800AD. It is a moated motte and was a stronghold of the Mormaer of Mar and is sometimes described as the 'Citadel of Mar'.