Inside the museum, you can visit an underground chamber containing archeological remains of the Cabildo -main administrative institution of the colonial government that was was destroyed by the earthquake of March 20, 1861- and the remains of the Town Slaughterhouse and the Fruit and Vegetables Market, which were built on the ruins of the first building.
The capitular rooms floors, made of creole tiles, and the sheet of asphalt and red tiles corresponding to the slaughterhouse and the fruit market, respectively, are clearly appreciated.
Among the objects exhibited, there are dioramas, photographs and scale models that recreate the history and evolution of the city, as well as objects extracted in situ, which date from the times of the devastating earthquake.