International Dark Sky Reserves

Star trails over the ruins of Llanthony Priory in Brecon Beacons National Park, Wales. Photo by Michael Sinclair

Light from the Milky Way is reflected in the still waters of Stanley Lake in the Central Idaho Dark Sky Reserve. Photo by Wally Pacholka

Night sky over the Skellig Islands, Ireland. Photo by Peter Cox.

The Milky Way rises over Mont-Mégantic Observatory, Québec. Photo by Guillaume Poulin.

Observing the Milky Way at Namib Nature Reserve. Photo by Matthew Hodgson.

Star trails over Pic du Midi Observatory in the French Pyrénées mountains. Photo by Paul Compère.

‘The Spirit Of The Lake’ (Llyn Llydaw, Snowdonia). Photo by Kris Williams

An IDA International Dark Sky Reserve is a public or private land possessing an exceptional or distinguished quality of starry nights and nocturnal environment that is specifically protected for its scientific, natural, educational, cultural, heritage and/or public enjoyment. Reserves consist of a core area meeting minimum criteria for sky quality and natural darkness, and a peripheral area that supports dark sky preservation in the core. Reserves are formed through a partnership of multiple land managers who have recognized the value of the natural nighttime environment through regulations and long-term planning.

Certified IDA International Dark Sky Reserves

Designate an International Dark Sky Reserve

IDA designates International Dark Sky Places following a rigorous application process requiring applicants to demonstrate robust community support for dark sky protection and document designation-specific program requirements. Learn more and start the process here.

Download the current International Dark Sky Reserve guidelines

2018 International Dark Sky Reserve Guidelines

2020 Submission Deadline Dates

24 February 2020 25 May 2020 24 August 2020 30 November 2020

Resources for applicants

For current International Dark Sky Reserves

Writing Dark Sky Reserve Annual Reports