KnowraNational Historic LandmarkLinked fromLinked fromThe 9 pages that link to National Historic Landmark, each with the reason it gives.All 9Related 5Narrower topic 2Compared with 2National Park ServiceRelated: The agency administers the program that identifies and supports these nationally significant places.Eero SaarinenRelated: The TWA Flight Center received this designation, reflecting its architectural and historical standing.American Philosophical SocietyRelated: The society’s Philosophical Hall is recognized for its historical importance.Isaac SternRelated: Carnegie Hall received this designation after its preservation, reinforcing its public protection.Woolworth BuildingRelated: The building received this federal recognition for its architectural and historical importance.