5 /5 Kevin: Roosevelt University, the Auditorium Building, was designed by Adler and Sullivan and completed in 1889. A Chicago-School classic structure. With restorations occurring in 2003. One of Chicagos most iconic buildings and one of the now few remaining original buildings attributed to Sullivan. A work of art. Massive. Heavy. Stoic. Stone. Beautifully decorated and detailed interior. An engineering feat of its day.