The 1935 Colby Community High School (750 W. 3rd) is an Eclectic Mediterranean Revival style structure with art deco influences. Colby City Hall (585 N. Franklin), built in 1936 of native limestone, features a minimal art deco style. The former St. Thomas Hospital (210 S. Range), a 1941 project, was constructed of red brick in the 19th-century Georgian Revival style. (NRHP)