The former monastery was built by the Augustinians in a sober style and is one of the few examples of claustral architecture from the 16th century. 

The walls were constructed with volcanic rock, and the spaces feature frescoes from the 16th and 17th centuries depicting scenes from the life of Christ, as well as some friars and saints. 

A wooden door from the 16th century is still preserved, composed of relief-carved panels depicting the passion and death of Christ.

The museum exhibits pre-Hispanic pieces found in the archaeological excavations of the Historical Park and Paper Mill, such as the goddess of corn cobs, Chicomecóatl, carved in volcanic rock, and a representation of Tláloc, the god of water. 

It also includes a photographic exhibition showcasing the restoration of the building, and a room that recreates a monastic cell, providing a better understanding of the way Augustinian friars lived.

In front of the main facade, there is the Historical Park, which preserves remnants of the pond and the colonial pier. A few meters away are parts of what used to be the Paper Mill, considered the first of its kind in New Spain.

A few meters from the cloister, remnants of the first paper mill in Latin America are preserved.