In our overlit world, oases of nighttime darkness are emerging. They draw attention to the importance of darkness for humans and animals and allow astronomical observations that would be completely impossible in cities and their surroundings.
Jizera dark sky area
http://www.izera-darksky.eu/index-cs.html
Beskydy dark sky area
http://www.boto.cz/
Manetin dark sky area
http://manetinskatma.cz/
The Jeseníky Mountains, Mountains of Dark Sky
http://www.izera-darksky.eu/index-cs.html
Podyjska dark sky area
Not yet declared.[Memorandum]
[Brno daily][Naše voda]
International Dark Sky Organization
The International Dark-Sky Association
https://darksky.org/
https://www.ceskatelevize.cz/porady/1095913550-nedej-se/216562248420005/