Pennsylvania - Criteria: A (event)
| Warrior Ridge Dam and Hydroelectric Plant |
| Warwick Furnace/Farms |
| Warwick Mills |
| Warwick, The |
| Washington Armory |
| Washington Avenue Historic District |
| Washington Crossing State Park |
| Washington Memorial Chapel |
| Washington Square |
| Washington Vocational School |
| Waterford Bourough Historic District |
| Waterford Covered Bridge |
| Waterloo Mills Historic District |
| Water Street District |
| Waynesboro Armory |
| Waynesburg Historic District |
| WCAU Studios |
| Weaver, Henry, Farmstead |
| Weaver's Mill Covered Bridge |
| Weber-Weaver Farm |
| Wee Grimmet |
| Wehr Covered Bridge |
| Weidner Mill |
| Welkinweir |
| Welles, Ellen and Charles F., House |
| Wellsboro Armory |
| Wellsboro Historic District |
| Wellsville Historic District |
| Wentz, Peter, Homestead |
| Weona Park Carousel |
| Werner, William, House |
| Wertz Mill |
| Wertz's Covered Bridge |
| Wesley AME Zion Church |
| Wesley Building |
| West Alexander Historic District |
| West Chester Boarding School for Boys |
| West Chester State College Quadrangle Historic District |
| West End Wheelmen's Club |
| Westinghouse Air Brake Company General Office Building |
| Westinghouse, George, Memorial Bridge |
| West Middletown Historic District |
| Westmont Historic District |
| Westmoreland County Courthouse |
| West Norristown Historic District |
| West Overton Historic District |
| West Park Place |
| West Philadelphia High School |
| West Philadelphia Streetcar Suburb Historic District |
| West Side Sanitarium |
| West Sixth Street Historic District |
| West Vincent Highlands Historic District |
| Wharton Furnace |
| Whipple Dam State Park Day Use District |
| White Covered Bridge |
| Whitefield House and Gray Cottage |
| Whitehall Apartments |
| White Hall of Bristol College |
| Whitehill-Gleason Motors |
| White Horse Tavern |
| White Horse Tavern |
| White House Inn |
| White Rock Forge Covered Bridge |
| Whitsett Historic District |
| William Penn Hotel |
| Williamsburg Historic District |
| Williams Deluxe Cabins |
| Williams, John, Farm |
| Williamsport Armory |
| Williams, Roger, Public School No. 10 |
| Willis House |
| Willow Mill Complex |
| Wills Hospital |
| Willson, Thomas A. and Co. |
| Wilmot, David, School |
| Wilson College |
| Wilson, Levi, Tavern |
| Wilson, Robert, House |
| Wilson's Mill Covered Bridge |
| Windber Historic District |
| Windom Mill Farm |
| Windsor Forge Mansion |
| Wissahickon |
| Witherspoon Building |
| Witmer's Tavern |
| Wolf, Penrose, Building |
| Wolley Stille |
| Wollner Building |
| Woman's Club of Warren |
| Woman's Medical College of Pennsylvania |
| Womelsdorf Historic District |
| Woodland |
| Woodland Station |
| Woodmont |
| Woods, Nettie, Covered Bridge |
| Woodvale Historic District |
| Woodward Inn |
| Woolslair Elementary School |
| Worker's House at Lower Laurel Iron Works |
| Worlds End State Park Family Cabin District |
Data from United States Park Service and Wikidata
