Illinois - Area of significance: Architecture
| U.S. Post Office |
| U.S. Post Office and Courthouse |
| U.S. Post Office and Courthouse |
| Valencia Court Apartments |
| Van Dolah, David Hyatt, House |
| Van Epps, William H., House |
| Van Hagen, George E., House |
| Van Leer, Margaret and Bird, Broadview Mansion |
| Vassar Swiss Underwear Company Building |
| Verdurette |
| Vermont Historic District |
| Vermont Masonic Hall |
| Vial, Robert, House |
| Villa de Kathrine |
| Village Hall |
| Villa Historic District |
| Vine-Oakwood-Green Bay Road Historic District |
| Virginia Theater |
| Vogt, Karl, Building |
| von KleinSmid Mansion |
| Voorhies Castle |
| Vriner's Confectionery |
| Wagner, Robert, House |
| Waller, William, House |
| Walser, Joseph J., House |
| Ward, Thornton, Estate |
| Warfield, William S., House |
| Warm Air Research House |
| Warner, Seth, House |
| Warren Commercial Historic District |
| Warren, Edward Kirk, House and Garage |
| Warsaw Historic District |
| Washburne, Elihu Benjamin, House |
| Washington Park |
| Washington Park Historic District |
| Washington Square Historic District |
| Waterloo Historic District |
| Water Tower, Building 49 |
| Watson, David and Julia, House |
| Waugh, Robert, House |
| Waukegan Building |
| Waukegan Public Library |
| Wear, Washington C., House |
| Weber, Howard K., House |
| Weber, Robert, Round Barn |
| Wee Haven |
| Weinrich, Christian F. |
| Weir, John, House |
| Weir, William S., Jr., House |
| Weisel, Andrew, House |
| Weister, Frederick, House |
| Welling-Everly Horse Barn |
| Wenner, Charles, House |
| Werner Brothers Storage Warehouse No. 6 |
| West Argyle Street Historic District |
| West Bluff Historic District |
| West Burton Place Historic District |
| West Downtown Rockford Historic District |
| West End Historic District |
| Western Springs Water Tower |
| Westervelt Christian Church |
| West Jackson Boulevard District |
| West Loop-LaSalle Street Historic District |
| West Loop-LaSalle Street Historic District |
| Westminster |
| Westover Road Non-Commissioned Officers' Housing Historic District |
| West Park Neighborhood Historic District |
| West Pullman Elementary School |
| West Side Historic District |
| West Walnut Street Historic District |
| Weyerhaeuser House |
| Wheeler-Kohn House |
| Wheeler-Magnus Round Barn |
| White Building |
| White Hall Foundry |
| White, Louise, School |
| White Pines State Park Lodge and Cabins |
| White Place Historic District |
| White, W.E., Building |
| Whitney, Col. Nathan, House |
| Wicker Park Historic District |
| Williams, James Robert, House |
| Williamson County Jail |
| Williams, Silas, House |
| Willits, Levi, House |
| Willits, Ward Winfield, House |
| Will Rogers Theatre and Commercial Block |
| Wilmette Village Center Historic District |
| Wilson, Judge Isaac, House |
| Winchester Historic District |
| Winslow, William H., House And Stable |
| Witwer House |
| Women's Gymnasium, University of Illinois at Urbana-Champaign |
| Women's Residence Hall-West Residence Hall, University of Illinois at Urbana-Champaign |
| Wood, Ernest M., Office and Studio |
| Woodland Cemetery |
| Woodstock Opera House |
| Woodstock Square Historic District |
| Wood-Tellkamp House |
| Wright, Dr. Charles M., House |
Data from United States Park Service and Wikidata
