The edifice owes its name, "shed of two and a half days", to the fact that the Urs festival held here lasted for two and a half days. At the rear of a huge courtyard, the impressive façade of the prayer room is reminiscent of the Seljuk style: seven monumental pointed arches, with a larger central arch on top of which were two minarets (of which only the bases remain). The interior features five domes adorned with rose windows and floral motifs.