The Parish Church of Saint Mary, is popularly known as the Rotunda or the Mosta dome due to its large dome; which can be seen from most parts of Malta.

The church was designed by a Maltese architect called Giorgio Grognet de Vassé. The church’s design was closely based on the Pantheon in Rome; 6 columned portico with a circular 39.6m diameter dome. It was built between the 1833 and 1860 with funds raised by the local people.

During World War 2 in 1942, a bomb fell through the church and it didn’t detonate. This was considered as a miracle especially since around 300 people were in the church waiting for the mass to commence. A replica of the said bomb is available to see in the sacristy, left of the altar.