You've probably been to an amusement park before, but have you seen one that was built underground?

This salt mine in Romania was transformed into an amusement park after it was done being used to get salt. They have paddle boats and even a Ferris wheel all underground! It's a really cool way to reuse this place for something amazing.

Have you ever wanted to make your own amusement park? What would you put in your own underground amusement park? Check out their cool ideas: