A magazine ranked Boulder, Colorado, as the happiest U.S. city. One reason may be their annual naked pumpkin run and marijuana 4:20 events. The latter occurs on the University of Colorado Boulder campus. It is an excellent school with a gorgeous blend of modern and historic facilities. One example is the old Buckingham Library. When it opened in 1904, the facility had 30,000 volumes managed by librarian Alfred Whitaker. The building is now the University Theater.