The government palace, or Palacio de Gobierno, is located on the east side of the Plaza de Armas. This building dates from the second half of the 18th century, and was built to replace an adobe structure which had been in use since 1643. The baroque facade was completed in 1774, and the building was completed in 1790.
The Government Palace was first occupied by the governors of New Galicia during the colonial period and later served as a residence for Miguel Hidalgo, who, in 1810, passed a law abolishing slavery in Mexico from this very palace.
State government offices now occupy the building. The government palace is open Monday to Friday from 9 am to 8 pm. There is no admission fee, just nod at the guards at the door, and go on in so you can see the murals by Jose Clemente Orozco.