Building B is located in the Southeast-Hollow (Main Excavation Area) of Göbekli Tepe.
It has a round ground plan and measures roughly 10 metres in diameter. A total of seven T-shaped limestone pillars have so far been discovered set into its circular wall. The two central T-pillars brings the total number of monoliths in this building to nine.
However, as the building is not yet excavated in its entirety, further pillars may still be found.
The floor of the building was excavated over several square metres in the area between the two central pillars. The floor of this building is made of a lime mortar (terrazzo floor).
The inner-facing broad sides of the two central pillars carry depictions of life-size foxes (in low relief).
It dates from the 10th-9th mill. BC