Buddhist rock-cut architecture primarily consists of two types: 1. Chaitya A prayer hall or place of worship. These often have a stupa at one end, which is the object of veneration. The hall typically has a nave, aisles, and an apse surrounding the stupa. 2. Vihara A monastery or dwelling place for monks and nuns. Viharas usually consist of a central hall surrounded by cells for residential purposes.