Built as part of the Daniels & Fisher department store in 1910, [the Daniels & Fisher Tower] was the tallest structure west of the Mississippi [...] Modeled after The Campanile (St. Mark’s Bell Tower) at the Piazza San Marco in Venice, Italy, the 20-floor clock tower has clock faces on all four sides.
I’ve been curious about the history of this odd building. It’s previous connection to the department store explains the ugly brick sheathing that is now on its west side.
See also the view of 16th Street from the top of the tower, 1925 and a closer-to-earth photo of 16th Street, Denver, 1933.