In collaboration with the
International Astronomical Union
latest news
  • The printed edition of the second ICOMOS-IAU Thematic Study on astronomical heritage will be available from 30 November. The e-book version is already available.
  • Join our community project "Places connected to the Sky" and submit your favorite place...

Find Astronomical Heritage
Locate astronomical heritage geographically and/or temporally
Locate astronomical heritage by word tags

Full case studies

Full case studies, structured as sections of draft dossiers, aim to highlight issues that might arise if State Parties were to prepare nomination dossiers highlighting the astronomical values of the properties concerned. Examples:

Seven-stone antas, Portugal and Spain

Stonehenge World Heritage Property, United Kingdom

Chankillo, Peru

Risco Caído and the sacred mountains of Gran Canaria, Spain

Observatoire de Paris, France (in French), also Short case study in English and French)

Royal Observatory, Cape of Good Hope, South Africa

Pic du Midi de Bigorre Observatory, France  (separately in English and French)

Windows to the Universe, Chile, Spain and USA

Astronomical timing of Irrigation in Oman, Oman

Aoraki Mackenzie International Dark Sky Reserve, New Zealand

Propose a case study

Learn about how to propose a new case study to be published on the portal.

Regional and national resources


We are developing a list of astronomical heritage resources at the regional or national level that are available on other internet sites. If you have items that you would like added to this list, please contact This email address is being protected from spambots. You need JavaScript enabled to view it., who is helping us to improve this section.

Short case studies

Short case studies follow the format used in the ICOMOS–IAU Thematic Study on Astronomical Heritage (see right). Examples:

 Temple of Hathor at Dandara, Egypt

 Ulugh Beg's observatory,

 Dengfeng observatory, China

 Jantar Mantar at Jaipur, India

Struve Geodetic Arc, Norway and 9 other countries

University of Illinois Observatory United States of America

 Sydney Observatory, Australia

 Einstein Tower, Germany

 Atituiti Ruga, French Polynesia

 East Alpine starlight area, Austria

You can browse the full list of the case studies as well.