Will County Illinois (Historic Districts) has 9 places on the National Register of Historic Places including 2 places of National significance and 1 place of Statewide significance. Significant places include Brandon Road Lock and Dam Historic District, Lockport Lock, Dam and Power House Historic District and Lockport Historic District, Downtown Peotone Historic District and Joliet East Side Historic District.
Some of the country's most noteable architects helped create the Will County places including Walter Mickle Smith, Frederick L. Barrett, Charlotte Strong and James Weese. Prominent architectural styles found in Will Country are Late Victorian, Queen Anne and Classical Revival.