Black and white photo of a brick walkway in front of a building with…

Large crowd of people standing in front of the Brandenburg Gate in…

Man in a scuba suit with a camera attached to his back

Large stone building with a clock tower on top of it

Two men sitting on top of an airplane in front of a mountain

Crowd of people walking down a street lined with tall buildings

Black and white photo of people walking across a bridge over a body of…

Poster with a map of the Potomac River Basin

Black and white photo of an old steam engine on the railway track…