Subway stations may not seem like the scariest of places, unless you're looking through the lens of German photographer Nick Frank.
In a series called "Subway," which Frank shared with us, the Munich U-Bahn resembles something out of '2001: A Space Odyssey.'
The empty stations and tunnels are by turns beautiful and frightening, though there are splashes of color, too.
This looks like a set from a Stanley Kubrick or Ridley Scott film.
Frank shoots his photos early on Sunday mornings, so the stations will be empty.
Here's a look up at an elevator.
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