Bulgaria places fourth in the ranking of countries with highest rated national parks in Europe, a study conducted by SaveOnEnergy.com/uk shows.

 Bulgaria occupies this position with a TripAdvisor score of 9.64. Ukraine ranks first with a TripAdvisor score of 9.73. The Ukraine National Park with the highest rating is the Carpathian National Nature Park. Slovenia ranks second with the emblematic Triglav National Park and a score of 9.72. Slovakia places third with 9 national parks and an average score of 9.69. Bulgaria is fourth with three national parks- Pirin, Rila and Central Balkan. Switzerland places firth with a TripAdvisor score of 9.60.

The study emphasizes that the ecosystems there are entirely of natural origin and with a great variety of plant, animal species and habitats, BGNES reported.