Tara Canyon Europe's longest and deepest canyon plunges to depths of 1,300m and is included on UNESCO's World Heritage list. Vladimira Dvorakova / age fotostock;
Tara Canyon is Europe's longest and deepest, over 4,200 ft deep. 52 plant species grow there and it is the habitat for 314 animal species. It is also one of Unesco's World Heritage Sites, listed as a nature reserve. Don't forget that it is possible to go kayaking or rafting on its rapids.