1 / 12
Fort Sill National Historic Landmark, OK
2 / 12
Iowa State Capitol, Des Moines, IA
3 / 12
Ohio Statehouse National Historic Landmark, Columbus, OH
4 / 12
Rutherford B. Hayes Home National Historic Landmark, Fremont, OH
5 / 12
Spring Grove Cemetery National Historic Landmark, Cincinnati, OH
6 / 12
Locust Grove National Historic Landmark, Poughkeepsie, NY
7 / 12
Lincoln Highway, IA
8 / 12
Locust Grove National Historic Landmark, Poughkeepsie, NY
9 / 12
Spring Grove Cemetery National Historic Landmark, Cincinnati, OH
10 / 12
Spring Grove Cemetery National Historic Landmark, Cincinnati, OH
11 / 12
Fort Washita National Historic Landmark, OK
12 / 12
Equitable & Woolworth Building National Historic Landmarks, NYC, NY