Answer: Bengal witnessed a temple-building spree from the late fifteenth century, which culminated in the nineteenth century. Many of the modest brick and terracotta temples in Bengal were built with the support of several “low” social groups, such as the Kolu (oil pressers) and the Kansari (bell metal workers). When local deities, once worshipped in thatched huts in villages, gained the recognition of the Brahmanas, their images began to be housed in temples. The temples began to copy the double-roofed (dochala) or four-roofed (chauchala) structure of the thatched huts. This led to the evolution of the typical Bengali style in temple architecture. Temples were usually built on a square platform with a relatively plain interior, but the outer walls of many temples were decorated with paintings, ornamental tiles or terracotta tablets. In some temples, particularly in Vishnupur in the Bankura district of West Bengal, such decorations reached a high degree of excellence.