Croatia

Apart from the coast, Croatia's most exciting place is the Plitvice Lakes National Park.

An excerpt from the article 51 facts about Croatia
It is a series of small turquoise lakes divided by limestone barriers, forming numerous small waterfalls. The park is 19.5 ha in size, and the lakes cover only 1% of the area. The rest is forested ravines, pastures and meadows, where a bear can be spotted. Twenty caves have been discovered here. Plitvice is home to 16 lakes and 92 waterfalls.