The second window, facing the main façade of the Metropolitan Cathedral, displays the volcanic stone remains that were part of a wall of the First Cathedral.
In the atrium of the Metropolitan Cathedral, four archaeological windows display what appear to be the remains of the side chapels and sacristy that were attached to the north side of the Main Church or Old Cathedral of Mexico, built by Hernán Cortés in 1525. This first work, designed and executed by architect Martín de Sepúlveda, was completed in 1532 after several repairs and was finally demolished in 1626.
The second window is 4.20 m long and 2.20 m wide. On the north side, you can see the remains of a wall from the First Cathedral, which was built with volcanic stone. Its façade is covered with lime and sand mortar, which serves as the base for a mural with a series of phytomorphic representations framed by a red border. The floor of this room was made with red bricks laid in a petatillo pattern.
Source: Raúl Barrera Rodríguez, director of the Urban Archaeology Program
