Fort Marion National Monument, St. Augustine, Florida (1938) vintage poster by C. Don Powell. Original public domain image… https://www.rawpixel.com/image/8854471/image-art-public-domain-blueFree Image from public domain licenseFort Marion National Monument, St. Augustine, Florida (1938) vintage poster by C. Don Powell. Original public domain image… https://www.rawpixel.com/image/8628547/image-art-public-domain-blueFree Image from public domain licenseA view of the bombardment of Fort McHenry, near Baltimore, by the British fleet, taken from the observatory under the… https://www.rawpixel.com/image/7690951/image-art-public-domain-posterFree Image from public domain licenseSoldier's cabin at Fort Caspar in Oregon. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/3092802/free-photo-image-oregon-trail-cabin-interior-americaFree Image from public domain license Railroad bridge over the Bad River, a small tributary of the Missouri River in Fort Pierre, a small… https://www.rawpixel.com/image/8042515/photo-image-public-domain-city-united-statesFree Image from public domain licenseSan Francisco, United States. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3299473/free-photo-image-bay-bridge-boardwalkFree Image from public domain licenseBay Bridge at night. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3290400/free-photo-image-resort-san-francisco-a7riiFree Image from public domain licenseThe George Washington Bridge over The Hudson River in Fort Lee, New Jersey USA - Original image from Carol M.… https://www.rawpixel.com/image/434594/free-photo-image-new-jersey-architecture-tourismFree Image from public domain licenseThe Chesapeake Bay Bridge (commonly known as the Bay Bridge) is a major dual-span bridge in the U.S. state of Maryland.… https://www.rawpixel.com/image/421929/free-photo-image-bridge-carol-highsmith-marylandFree Image from public domain licenseThe Venice Beach Boardwalk. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3305149/free-photo-image-amusement-park-boardwalk-bridgeFree Image from public domain licenseWhite canyon, near the Sipapu Bridge Natural Bridges National Monument, 05/1972. Photographer: Norton, Boyd. Original public… https://www.rawpixel.com/image/8799831/photo-image-plant-tree-skyFree Image from public domain licenseThe Chesapeake Bay Bridge between Maryland's capital city and the Maryland Eastern Shore. Original image from Carol M.… https://www.rawpixel.com/image/3094371/free-photo-image-aerial-view-america-bayFree Image from public domain licenseReston Station (part of first batch installed in Reston, VA). Original public domain image from Flickr https://www.rawpixel.com/image/6080196/photo-image-public-domain-wood-buildingFree Image from public domain licenseBlack and white shot of Golden Gate Bridge Vista Point with empty road. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3300428/free-photo-image-exposure-png-building-architectureFree Image from public domain licensePoint of Rocks Bridge, Maryland. Original image from Carol M. Highsmith’s America, Library of Congress collection.… https://www.rawpixel.com/image/3093236/free-photo-image-america-beautiful-blue-skyFree Image from public domain licenseLong Golden Sunset. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3284890/free-photo-image-urban-architecture-sunset-bridgeFree Image from public domain licenseRailroad bulletin, Hagerstown, Maryland. Sourced from the Library of Congress. https://www.rawpixel.com/image/12253114/photo-image-public-domain-brick-architectureFree Image from public domain licensePaper Mill Road Bridge, Baltimore County, Maryland. Original image from Carol M. Highsmith’s America, Library of… https://www.rawpixel.com/image/3093225/free-photo-image-america-baltimore-county-blue-skyFree Image from public domain licenseAntietam Battlefield's Burnside Bridge, Sharpsburg, Maryland. Original image from Carol M. Highsmith’s America… https://www.rawpixel.com/image/3094706/free-photo-image-america-antietam-battlefields-burnside-bridge-autumnFree Image from public domain licenseThe Dover Bridge over the Choptank River in Talbot County on Maryland's Eastern Shore. Original image from Carol M.… https://www.rawpixel.com/image/3094368/free-photo-image-america-beautiful-blue-skyFree Image from public domain licenseGrays Harbor National Wildlife RefugeGrays Harbor National Wildlife Refuge in Washington State, April 16, 2022. USFWS… https://www.rawpixel.com/image/9654629/photo-image-plant-tree-public-domainFree Image from public domain licenseGround-level view of the 10th Street Bridge with the sun and cityscape in the background.. Original public domain image from… https://www.rawpixel.com/image/3299955/free-photo-image-pittsburgh-yellow-city-10th-street-bridgeFree Image from public domain licenseThe 15th New York Battery monument at Gettysburg National Military Park in Gettysburg, Pennsylvania. Original image from… https://www.rawpixel.com/image/3091318/free-photo-image-15th-new-york-battery-monument-america-carol-highsmithFree Image from public domain licenseThe sun sets in Helsinki prior to meetings between U.S. President Donald J. Trump and Russian President Putin in Helsinki… https://www.rawpixel.com/image/4043339/photo-image-ocean-person-natureFree Image from public domain licenseThe Bureau of Land Management photo. Original public domain image from Flickr https://www.rawpixel.com/image/3393356/free-photo-image-america-boardwalk-botanicalFree Image from public domain licenseA white tower and brick walls under a large bridge-like steel structure. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3288186/free-photo-image-amusement-park-architecture-beneathFree Image from public domain licenseA long-exposure shot of light trails on the freeway with the New York city skyline at the back. Original public domain image… https://www.rawpixel.com/image/3283557/free-photo-image-new-york-skyline-1980Free Image from public domain licenseView of the Freedom Tower from the walkway on the Brooklyn Bridge in New York City. Original public domain image from… https://www.rawpixel.com/image/3304395/free-photo-image-skyline-new-york-architecture-banisterFree Image from public domain licensePhotographed by Volunteer Photographer Connar L'Ecuyer. Original public domain image from Flickr https://www.rawpixel.com/image/3399655/free-photo-image-boardwalk-bridge-buildingFree Image from public domain licenseRainbow over Nolin River LakeA double rainbow spans across the sky after a storm at Nolin River Lake, Bee Spring, Kentucky.… https://www.rawpixel.com/image/4036686/photo-image-rainbow-nature-skyFree Image from public domain licenseBrooklyn Bridge. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3237360/free-photo-image-brooklyn-bridge-new-yorkFree Image from public domain licenseTwo members of the Liberty Jump Team, a commemorative team of volunteer parachutists, jump out of a restored C-47 Skytrain… https://www.rawpixel.com/image/8727735/photo-image-airplane-public-domain-birdFree Image from public domain licenseSipapu Bridge, White Canyon. Natural Bridges National Monument, 05/1972. Photographer: Norton, Boyd. Original public domain… https://www.rawpixel.com/image/8803010/photo-image-mountain-nature-landscapeFree Image from public domain licenseBridges by Means of which Cars are loaded uopn or loaded from Arks or Barges by A J Russell https://www.rawpixel.com/image/14276568/image-frames-person-woodenFree Image from public domain licenseA U.S. Army Ranger performs a wall climb during the Best Ranger Competition 2017, Fort Benning, Ga., April 8, 2017. https://www.rawpixel.com/image/3318554/free-photo-image-obstacle-course-bridge-rtbFree Image from public domain license