The Western Stone, located in the northern section of Wilson's Arch

Wilson's Arch (Jerusalem)

Wilson's Arch is the modern name for the ancient stone arch whose top is still visible today, where it is supported against the Northeast corner of Jerusalem's Western Wall, so that it appears on the left to visitors facing the Wall...

, is a monolithic

Monolithic architecture

Monolithic architecture is a style of construction in which a building is carved, cast or excavated from a single piece of material. The most basic form of monolithic architecture is the monolith, such as the monolithic churches of Lalibela, Ethiopia or the Pancha Rathas in India.Buildings with a...

 stone block forming part of the lower level of the Western Wall

Western Wall

The Western Wall, Wailing Wall or Kotel is located in the Old City of Jerusalem at the foot of the western side of the Temple Mount...

 in Jerusalem. Weighing 517 tonnes (570 short tons), it is one of the largest building blocks in the world. The stone is 13.6 meters (44.6 feet) long and 3 metres (9.8 feet) high and has an estimated width of 3.3 meters (10.8 feet).