Skyline including Sears Tower Chicago Illinois USA

aqua architectural architecture blue sky blue water building buildings calm chicago cities city cityscape color colour day daylight daytime exterior great lakes height horizon horizontal il illinois industrial industry lake lake michigan lakes metropolis metropolitan midwest nobody outdoor outdoors outside panorama panoramic picture postcard postcard sears tower shore sightsee sightseeing skyline skylines skyscraper skyscrapers tourism tourist attraction tower towering towers travel travel destination urban us usa water