River traffic on the south branch of the Chicago River, Willis Tower, formerly the Sears Tower dominates the skyline, Chicago, Illinois, United States of America, North America

photography horizontal outdoors outside day daytime willis tower sears tower chicago river chicago illinois usa us united states united states of america america american north america north american travel destination travel incidental people background people people in the background building exterior building buildings architecture architectural urban scene urban cityscape cityscapes city scape city scapes river rivers bridge city cities transportation transport water tourist destination interlandmark