
The Cathedral of Learning is located in Oakland a Pittsburgh neighborhood, in the center of University of Pittsburgh's main campus. It's the second tallest educational building in the world.
"Begun by Chancellor John Bowman in 1926 and dedicated in 1937, the building was realized with the help of contributions from men, women, and children throughout the region and the world. During the peak of the Depression, when funding for the project became especially challenging, school children were encouraged to contribute a dime to 'buy a brick.'
In addition to the magnificent three-story 'Commons Room' at ground level, the Cathedral of Learning also contains classrooms (including the internationally renowned Nationality Classrooms), the University's administrative offices, libraries, a computer center, a restaurant, and offices and classrooms for many liberal arts departments."
in http://www.umc.pitt.edu/tour/tour-080.html