Plitvice Lakes National Park, Croatia

No matter where you look in this part, it honestly looks a bit surreal, as though your eyes were tricking you. The main reason for that is the colors: with its turquoise lakes (there are more than a dozen of them) and bright, leafy green trees, you’ll feel as though you’re caught in a photograph where someone bumped the saturation and changed the hue on you! Unfortunately, if you were thinking of taking a dip in these tranquil waters, that’s against the rules—but there are plenty of other great activities to enjoy like hiking, or you could head to Krka National Park instead, which offers similar views but with the opportunity to go swimming in one of the pools.