The document discusses the evolution of Dravidian architecture under different South Indian dynasties. It focuses on architecture during the Chola period from 900-1150 AD. The Cholas developed Dravidian temple architecture to near perfection, building two magnificent temples at Tanjore and Gangaikonda Cholapuram in the early 11th century. The greatest of these was the Brihadeshwara Temple at Tanjore built by Raja Raja Chola I in 1010 AD, which remains a symbol of Chola greatness due to its massive scale and fine sculptural details.