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From the outside, it's a cool building that's still pretty innocuous.

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Some parts of the facility look like a regular mine...

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But down below, things get kind of exciting.

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Inside Salina Turda are a number of mines, rooms, and galleries.

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Now a popular tourist destination, there's plenty to do down below.

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Guests can even take boat rides through the space, which almost seems too cool to be true.

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...while others look like something out of a sci-fi movie.

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The deepest mine inside is the Terezia mine, which is about 394 feet deep.

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The lighting inside the mine is what makes this place really space age.

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Can you imagine spending an afternoon here?

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