Ajanta
The vihāras are of various sizes the maximum being about 52 feet. They are often square-shaped. Their excavation exhibits a great variety, some with simple facade, others ornate; some have a porch and others do not. The hall was an essential element of a vihāras. In the Vākāţaka phase, early viharas were not intended to have shrines because they were purely meant to be halls of residence and congregation. Later, shrines were introduced in them in the back walls, which became a norm. The shrines were made to house the central object of reverence that is the image of the Buddha often seated in the dharmachakrapravartana mudra (the gesture of teaching). In the caves with latest features, we find subsidiary shrines added on the side walls, porch or the front-court. The facades of many vihāras are decorated with carvings, and walls and ceilings were often covered with paintings.