Season appropriate

Autumn sky

Taken at the Art Institute of Chicago (South Courtyard).

Simple

I know what I like. Trump International Hotel and Tower at 401 N Wabash Ave, Chicago.

Triangulated

Cnr of State and Grand Streets, Chicago.

Delicate

Curved

Interior of James R. Thompson Center, Chicago.

Ominous

Large Interior Form by Henry Moore in the north courtyard of the Art Institute of Chicago.