Caledonia Historic District is a national historic district located at Caledonia, Washington County, Missouri. It encompasses 33 in the central business district and surrounding residential sections of Caledonia. It developed between about 1818 and 1936 and includes representative examples of Greek Revival and Neoclassical style architecture. Notable buildings include the Ruggles-Evans-Dent house (c. 1830), Conoco service station (c. 1930), Tyro Masonic Lodge (1919), Eversole House (1854), Post office (c. 1909), Benton Sinclair store (c. 1909), McSpaden's Golden Rule Store (c. 1909), Methodist Church (c. 1852), Presbyterian Church (1872), and Caledonia School (1936).[2]