This hardly even looks like an observatory! It seems that each observatory has such character and personality. The structure is often steel prefab, but the remote locations (as seen here) or the science graffiti (as seen here) make each station unique. The Chamberlin Observatory in Denver, however, is a really nice looking building.
The University of Denver and the Denver Astronomical Society allow the observatory to host public visitors frequently, and you can even reserve a spot in an upcoming event online. Our trip plans include a visit to the Chamberlin Observatory on our trip up, after spending a day in Colorado Springs!