There exists a unique collection within Stirling Castle (located in Stirling, Scotland). The castle itself is one of the largest and most important castles in Scotland, both historically and architecturally. See Stirling Castle.
The Stirling Heads are one-meter wide 16th-century oak medallions carved with images of kings, queens, nobles, Roman emperors and characters from the Bible and Classical mythology. They decorated palace ceilings until a collapse in 1777, after which they were dispersed.