construction work. In 1604 the first part of the third cathedral was inaugurated. When Becerra died in 1605, only half of the church was built. The final plan was designed immediately after the 1606 earthquake, although another in 1609 threatened to destroy the entire building, damaging the vaults of the built part. Discussions were held on the best means of defense against seismic movements: the Chief Architect, Juan Martínez de Arrona, supported the idea of brick vaults, but several members of the Cabildo or Municipal Council considered that it would be better to cover the cathedral with wood. Tired of the need to find a solution to the problem, they appointed Bartolomé Lorenzo as Advisor to Arrona. Finally, in October 1625, the naves of the main part of the third cathedral were consecrated. The main entrance (designed by Arrona) was completed in 1632, and the towers in 1649. The 1687 earthquake caused much damage to the cathedral, and despite all the precautions taken in construction, the 1746 earthquake damaged the structure again and almost reduced it to ruins, requiring a new reconstruction, the Viceroy José Antonio Manso de Velasco ruled at the time, who ordered a new cathedral to be built in the same place in 1758. The existing building is a reconstruction, which, by order of the Viceroy José Antonio Manso de Velasco, undertook -following the old plans- the Jesuit Juan Rher (born in Prague). Rher took full advantage of the use of wood and quincha in the ribbed vaults, rebuilt the Renaissance stone doorway and advanced the work quite a bit, leaving the bell towers unfinished for a long time. The reconstruction was carried out in three parts, the first culminated in 1755, the second in 1758 and the last in 1778. Between the years 1794 and 1797 the current bell towers of the cathedral, which remained unfinished, were rebuilt being finished by the Presbyter Matías Maestro. In the left tower is the bell called "la Cantabria", which weighs 300 quintals and was cast in Lima. On the right "la Purísima", of 150 quintals, and "la Vieja", of 55 quintals. In its interior aspect as in the exterior, the first church of Peru, which holds the title of Metropolitan Basilica, has undergone many notable changes. Baroque, Gothic and Neoclassical elements have been mixed in this way. A substantial change was the transfer of the choir to the presbytery