Source of photo: http://www.shout4music.com
The city centre is like a page out of a history book, adorned as it is by 17th century architectural marvels.
Source of photo: fineartamerica.com
Many thanks to Scott Herman and there are much more useful information on his website.
The La Campanía de Jesús was originally built by the Jesuits and is a spectacular church in the baroque-style. The church is located on the southeast corner of the Plaza.
photo from: travelpod.com