Using the word "underwater" to describe your theme park can mean many different things, but at Croatia's Underwater Park the word is used literally- because the park's "attractions" are all under the sea.
At the Underwater Park you slap on a diving helmet and slip under the water, checking out all the sea life, sunken ships and ancient artifacts on the ocean floor with skilled divers as your guide.
You can even ride a bike underwater there for some reason, and once that silly idea wears thin you can visit with the all the undersea life hanging around the place.
See more from The Unique Marvels Of Croatia's Underwater Park here