This business block, named for its client, Allen M. Ghost, is the only commercial design by one of Denver's best-known residential architects, who had his office here. A two-story arcade embracing storefront and second-story office windows is highlighted by radiating stone trim beneath a double-corniced third story. Quarry-face brown sandstone laid in a vernacular Richardsonian Romanesque mode exhibits the eccentric, ornate detailing that hallmarked Lang's work. Built at 15th Street and Glenarm Place, the building was reconstructed here after being disassembled stone by stone. The resurrected Ghost Block reopened in 1990 as a popular restaurant featuring Old West food and drink and New West decor.