The Rotunda of Mosta or Church of Our Lady of the Assumption is internationally known for having the largest unsupported dome in the world. Its construction took place in 1860 as a rebuilding of another older church. The dome measures 37 m in diameter, which is why its construction lasted twenty-seven years. You have all the information in: «Malta tourist guide: what to see and do«.
You have all the information in: "Malta tourist guide: what to see and do".