Published: Dec. 1, 2017

Doorways of CU Boulder

Look: Portals 

There are more than 360 buildings at CU Boulder and thousands of doorways. Have you strolled through some of these? We’ll send a poster of this image to the first 10 readers to correctly identify the location of 7 of the 12 doorways pictured here. Email responses to


Photos by Casey A. Cass