Wrigley Building with flags Chicago Illinois USA

architectural architecture blue sky building buildings chicago clock clock face clock faces clocks clocks color colour day daylight daytime design detail details exterior façade flag flags historic horizontal icon iconic il illinois landmark landmarks nobody old older ornament ornamentation ornaments ornate outdoor outdoors outside roman numeral roman numerals sightsee sightseeing spire spires stately structure structures time tourism tourist attraction tower travel travel destination us usa wrigley building