Even during the winter months, quite a lot of activity passes through the Chicago River. The fast movement of vehicles, cranes and even the flow of water along the river are all pronounced in this insightful time-lapse recording of a city that never appears to sleep. Juniper mei Digital Productions also captured the seasonal build-up of ice in the waters, revealing the cool climes in which all of this traffic must operate. Credit: YouTube/Juniper mei Digital Illustrations