F
- Footbridge ()
- Footpaths (7)
- Forage Storehouse ()
- Ford's Theatre ()
- Ford (21)
- Forebays (3)
- Forest reserves (1)
- Forests (2)
- Forge House ()
- Forge shops (13)
- Forges (1)
- Forging presses (6)
- Forging Press ()
- Fort Bakery ()
- Fort Barn ()
- Fort Barracks ()
- Fort Bastion ()
- Fort Blockhouse ()
- Fort Bowie ()
- Fort Commissary ()
- Fort Corrals ()
- Fort Davis (7)
- Fort Donelson ()
- Fort Frederica ()
- Fort Granary ()
- Fort Guard House ()
- Fort Guardhouse ()
- Fort Gun Shed ()
- Fort Headquarters ()
- Fort Hospital ()
- Fort House ()
- Fort Jail ()
- Fort Jefferson ()
- Fort Kitchen ()
- Fort Laramie (17)
- Fort Larned ()
- Fort Library ()
- Fort Magazine ()
- Fort Matanzas ()
- Fort McHenry National Monument and Historic Shrine ()
- Fort Officer's Club ()
- Fort Officers Houses ()
- Fort Officers Qtrs ()
- Fort Officers' Club ()
- Fort Officers' Qtrs ()
- Fort Offr's Qtrs ()
- Fort Point ()
- Fort Powder Magazine ()
- Fort Pulaski ()
- Fort Quarters ()
- Fort Raleigh ()
- Fort Redoubt ()
- Fort Retreat House ()
- Fort Schoolhouse ()
- Fort Smith (8)
- Fort Stables ()
- Fort Stable ()
- Fort Station ()
- Fort Storage Bins ()
- Fort Storehouse ()
- Fort Store ()
- Fort Sumter ()
- Fort Union ()
- Fort Vancouver ()
- Fort Washington (14)
- Fortification elements (3)
- Fortress ()
- Forts & fortifications (66)
- Forts (67)
- Fort (305)
- Foundation Remains ()
- Foundations (2)
- Foundries (27)
- Foundry & Machine Sh ()
- Foundry Shop ()
- Foundry/Garage ()
- Foundry ()
- Fountains (4)
- Fountain (3)
- Foursquare houses (6)
- Frame barn ()
- Fraternal lodges (16)
- Fraternal Lodge ()
- Fraternal org. ()
- Fraternity ()
- Frederick Douglass Home ()
- Frederick Law Olmstead ()
- Fredericksburg/Spotyslvania National Military Park ()
- Free schools (1)
- Freeway ()
- Freight Depot ()
- Freight houses (3)
- Freight House ()
- Freight Station ()
- Freight terminals (7)
- Freight Terminal ()
- Freight Train Depot ()
- Freighter ()
- French Legation ()
- Friends meeting houses (36)