Before the Mughal style came to dominate the Islamic architecture of the Indian sub-continent, Bengal and its rulers had developed their own forms. The mosque architecture of the Independent Sultanate period (from the 14th to the 16th centuries) represents the most important element of the Islamic architecture of Bengal. This distinctive regional style drew its inspiration from the indigenous vernacular architecture of Bengal, itself heavily influenced by Hindu temple architecture. The early Muslim architecture of Bangladesh is an important but little studied part of the architectural heritage of the Islamic world and the Indian sub-continent. Perween Hasan’s work is a most original contribution to its subject.