The Chicago Architecture Foundation (C.A.F.) was founded by architects and preservationists in 1966 to save H. H. Richardson's Glessner House, one of Chicago's oldest residences. To this day, C.A.F. is dedicated to its mission of advancing public interest and education in architecture and related design, which it supports and enables through tours, exhibitions, lectures, and special events attended by over 600,000 people each year.