Koenigsberg Observatory

Koenigsberg Observatory was an astronomical research facility which was attached to the Albertina University of Königsberg. Many important astronomers such as Friedrich Wilhelm Bessel, Friedrich Wilhelm Argelander and Arthur Auwers worked there. In 1838, the parallax of a star was determined successfully for first time by Bessel using a heliometer.

The observatory was destroyed by Royal Air Force bombs in 1944 during the Second World War.