Thatta's monuments include the Jama Mosque (also Shahjehani Mosque and Badshahi Mosque), built by Shah Jahan in 1647-49. The Shah Jahan Mosque is located in Thatta, Sindh province, Pakistan. It is included in the UNESCO World Heritage and has been to preserved since its entry.
The mosque is built with red bricks with blue coloured glaze tiles probably imported from another Sindh's town of Hala.The mosque has overall 100 domes and it is world's largest mosque having such number of domes. It has been built keeping acoustics in mind. A person speaking inside one end of the dome can be heard at the other end.
Shah Jahan Mosque Wikipedia Entry