The Greeley Union Pacific Railroad Depot, designed by architect Gilbert Stanley Underwood and built in 1930, reflected both the railroad's appreciation for the community's cooperation and the efforts of Greeley residents, including Chamber of Commerce president Thomas Welsh, who believed transportation was the dominant factor in city growth. At its dedication, Union Pacific President Carl Gray said there was not much economic justification for building the station and that the expenditure showed in some measure the railroad's appreciation for the aid the community had given the Union Pacific. The building features terra cotta trim on its four main entrances, grouped central double-hung windows on the east and west elevations, and stenciled folk art images of animals and designs on the interior ceiling beams. It was listed on the National Register of Historic Places in 1993. Greeley's connection to the outside world passed through a succession of four depots, beginning with a boxcar during the city's first year, followed by a modest board and batten depot in 1871 that greeted visitors such as Horace Greeley and P.T. Barnum, then a stone depot in 1883 near the present site, and finally the existing structure completed in 1930.