The Sixty Dome Mosque (Bengali: ষাট গম্বুজ মসজিদ Shaṭ Gombuj Moshjid; more commonly known as Shait Gambuj Mosque or Saith Gunbad Masjid), a UNESCO World Heritage Site, is a mosque in Bangladesh, the largest in that country from the Sultanate period. It has been described as "the most impressive Muslim monuments in the whole of the Indian subcontinent."
The 'Sixty Dome' Mosque has walls of unusually thick, tapered brick in the Tughlaq style and a hut-shaped roofline that anticipates later styles. The length of the mosque is 160 feet and width is 108 feet. There are 77 low domes arranged in seven rows of eleven, and one dome on each corner, bringing the total to 81 domes. There are four towers. Two of four towers were used to call azaan. The interior is divided into many aisles and bays by slender columns, which culminate in numerous arches that support the roof.
The mosque has 77 squat domes with 7 four-sided pitched Bengali domes in the middle row.The vast prayer hall, although provided with 11 arched doorways on east and 7 each on north and south for ventilation and light, presents a dark and somber appearance inside. It is divided into 7 longitudinal aisles and 11 deep bays by a forest of 60 slender stone columns, from which springs rows of endless arches, supporting the domes. Six feet thick, slightly tapering walls and hollow and round, almost detached corner towers, resembling the bastions of fortress, each capped by small rounded cupolas, recall the Tughlaq architecture of Delhi.The mosque represents wonderful archeological beauty which was the signature in the 15th century.