Mosta Rotunda, also known as the Parish Church of the Assumption, is a large church located in the town of Mosta, in central Malta. It is one of the most famous landmarks in Malta and is renowned for its impressive dome, which is one of the largest unsupported domes in the world.

The church was designed by the Maltese architect Giorgio Grognet de Vasse in the neoclassical style and was built between 1833 and 1860. It is dedicated to the Assumption of Mary and is a parish church in the Roman Catholic Archdiocese of Malta.

The church's impressive dome has a diameter of 37.2 meters and is one of the largest unsupported domes in the world. It is said to be based on the design of the Pantheon in Rome and was constructed using local limestone. During World War II, a bomb fell through the dome and landed in the church during a mass, but did not explode, leading to the belief that it was a miracle.

Inside the church, there are several impressive works of art, including a painting of the Assumption of Mary by the Maltese artist Giuseppe Cali and a large altar that was designed by the Maltese architect Lorenzo Gafà. The church also houses a number of relics, including a bone fragment from St. George, the patron saint of Mosta.

Mosta Rotunda is a popular tourist attraction and is often included in guided tours of Malta. It is also an important religious site and is visited by many pilgrims, particularly on the feast day of the Assumption of Mary, which is celebrated on August 15th.