Home Preservation Circle Chicago Tribune Tower, 1922, Howells & Hood, 435 N. Michigan Ave. Designated a Chicago Landmark in 1989. Photo Credit: Eric Allix Rogers

Chicago Tribune Tower, 1922, Howells & Hood, 435 N. Michigan Ave. Designated a Chicago Landmark in 1989. Photo Credit: Eric Allix Rogers

Chicago Tribune Tower, 1922, Howells & Hood, 435 N. Michigan Ave. Designated a Chicago Landmark in 1989. Photo Credit: Eric Allix Rogers

Chicago Tribune Tower, 1922, Howells & Hood, 435 N. Michigan Ave. Designated a Chicago Landmark in 1989. Photo Credit: Eric Allix Rogers

Pittsfield Building Vestibule, 1923, Graham, Anderson, Probst and White, 55 E. Washington Street. Designated a Chicago Landmark in 2002. Photo Credit: Eric Allix Rogers