Barricades in the streets, like these photographed in 1968, have a very long tradition in the history of France.
A Victorian-era family, evidently from Germany, wanted their Yuletide season of 1892 to be immortalized in a photograph. And here we are looking at it, 125 years later.
This area, whose shops used to sell old vacuum tubes in the 1930s, became one of the most tragic addresses in American history.
These medieval-era buildings were captured in a magnificent photo from the very end of the 19th century.
Two features of post-World War II America built this picture: the automobile, and the availability of university education.
New York was buried by the late-winter blizzard, turning a city of gas lights and horse-drawn carriages into a deadly winter nightmare.
An almost medieval-looking Paris captured on film ceased to exist shortly after these photos were taken in the 1850s.
Modernity is slowly replacing the old ways in this view of turn-of-the-century Ireland.
This church, which stood here since the 1500s, was demolished in 1848 to make room for a railway station, but not before this last photo was taken.
Brazilian digital colorist Marina Amaral has done a magnificent job of bringing this 1930s photo to life.