One of the coolest libraries of all time, the Biblioteca Gertrudis Bocanegra occupies the cavernous interior of the 16th-century San Agustín church. There are oyster-shell skylights and a massive colorful Juan O’Gorman mural on the rear wall that depicts the history of Michoacán from pre-Hispanic times to the 1910 revolution. It also has high-speed internet for just M$5 per hour and a huge collection of pulpy English paperbacks for sale (M$10 for four).