For thousands of years, people have built so-called calendar buildings: buildings that served as sundials for measuring time or were used for astronomical calculations. The most famous examples include the Pyramids of Giza, the Megalithic Temples of Malta, the Solarium Augusti on Rome-s Campus Martius, or the ancient observatories in Korea, Baghdad, Cairo, or Samarkand. The oldest known archaeo-astronomical device dates back to around 6000 BC and was discovered only some 20 years ago at Nabta Playa in Egypt.
The German photographer Hans Pieler (1951-2012) dedicated himself comprehensively to these calendar buildings. In a wide-ranging photographic project spanning 15 years, Pieler travelled the world in the search for such sites, studied them, and recorded many of them in striking photographs. His interest was focused both on the architecture and its particular coding through the respective culture as well as on the theory of photography, the allegorical image of the time.
