History keeps a lot of secrets and some of them will probably stay unsolved. But the invention of photography makes it a lot easier to store the memories of the past. The first ever photograph was taken in 1826 by French scientist Joseph Nicéphore Niépce. Since then a lot has changed.
We at Bright Side collected these 22 photos to show you the other side of history.
22. British sappers were trained to defuse mines blindly so they could work in the dark, 1943