Run by Historic Scotland, the castle dates to the 13th century, with surrounding gardens -- for some, the main attraction - that are apparently just as ancient. Reputed to have been completely sacked by Cromwell in 1650, another story holds that the building was only partially destroyed by his army but was further torn down by a local family. After building nearby Archerfield House, the owners desired a romantic ruin on their land, a grand garden feature. Highlights include the imposing gate house, vaulted arcades, and a 16th-century dovecot that resembles a beehive. The grounds include a herbaceous border that Guinness ranks as longest in the world.