Plitvice Lakes, Croatia is a stunning natural wonder that should be on everyone's bucket list. Located in the heart of the Dinaric Alps, this UNESCO World Heritage Site is home to 16 crystal-clear lakes, cascading waterfalls
From Wikipedia
Plitvice Lakes National Park is one of the oldest and largest national parks in Croatia. In 1979, Plitvice Lakes National Park was inscribed on the UNESCO World Heritage list, for its outstanding and picturesque series of tufa lakes, caves, and connected waterfalls.