McLennan County Texas (Historic Districts) has 4 places on the National Register of Historic Places including 1 place of National significance. Significant places include Veterans Administration Hospital Historic District, Castle Heights Historic District, Texas Textile Mills--L.L. Sams Company Historic District.
Some of the country's most noteable architects helped create the McLennan County places including US Department of Veteran's Affairs. Prominent architectural styles found in McLennan Country are Colonial Revival, Gothic and Late 19th And 20th Century Revivals.