Abernethy Round Tower

The Abernethy Round Tower is a stone-built Irish-style round tower which stands in School Wynd, at the edge of the village cemetery, in Abernethy, Perth and Kinross, Scotland.

Dating from the 11th century, the tower is one of only two such towers surviving in Scotland—the other is at Brechin—and is protected as a scheduled monument.

The roofless sandstone tower is 22.5 m high and has a diameter of 4.57 m at ground level, tapering upwards to 3.96 m. The walls are 1.07 m thick. The twelve lower layers are of a different coloured stone to the rest of the building, leading to speculation that the base was built earlier than the rest.

Source: Wikipedia