Interesting
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17 Pictures That Made Us Say "Oh, That's How They Do That!"

Updated August 22, 2019 413.6k votes 82.5k voters 5.0m views17 items

If you’ve spent any time lurking on Reddit’s mildlyinteresting, interestingasf*ck, or damnthatsinteresting subreddits, you’ve seen them: those pictures that make you slap your forehead and go, “So that’s how they do that!” They’re pictures that give you a behind the scenes peek at how common things function, are assembled, or are maintained.

Below are just some of the most interesting pictures of this kind, from Reddit and beyond. Vote up the ones that blew your mind at least a little.

Photo:
  • 1

    A Bricklaying Machine

    31,777
    4,581
    Is this fascinating?
  • 2

    How a Log Is Divided Up

    Photo: Metaweb / CC-BY
    34,155
    5,607
    Is this fascinating?
  • 3

    Moving a House in 1908

    24,949
    5,469
    Is this fascinating?
  • 4

    Changing Lightbulbs in an IMAX Theater

    Photo: flickr / CC0
    21,270
    5,565
    Is this fascinating?