Ancient Indian architecture ranges from the Indian Bronze Age to around 800 CE. By this endpoint, Buddhism in India had greatly declined, and Hinduism was predominant, and religious and secular building styles had taken on forms, with great regional variation, which they largely retain even after some forceful changes brought about by the arrival of first Islam, and then Europeans.
Much early Indian architecture was in wood, which has almost always decayed or burnt, or brick, which has often been taken away for re-use. The large amount of Indian rock-cut architecture, essentially beginning around 250 BCE, is therefore especially important, as much of it clearly adapts forms from contemporary constructed buildings of which no examples remain. There are also a number of important sites where the floor-plan has survived to be excavated, but the upper parts of structures have vanished.
