The best place to observe the night sky free of light pollution in Slovakia is in the east, at Poloniny national park.

The local night sky park was established ten years ago, said director of the Vihorlat astronomical observatory in Humenné, Igor Kudzej. He explained that the purpose was to see the night sky as our ancestors saw it and preserve it for future generations. It is also possible to observe the stars via professional instruments.
“The specialness of this park also lies in the fact that it is one of the rare number of night sky parks in Europe, if not the only one, with the professional observatory on the Kolonické saddle, offering visitors tours of the night sky,” Kudzej explained, as quoted by the TASR newswire.