Tycho Brahe's underground observatory on the island of Hven
Stjerneborg ("Star Castle" in English) was Tycho Brahe's underground observatory next to his palace-observatory Uraniborg, located on the island of Ven in the Öresund between Denmark and Sweden. Tycho Brahe built it circa 1581.
https://en.wikipedia.org/wiki/Stjerneborg
Stjerneborg ("Star Castle" in English) was Tycho Brahe's underground observatory next to his palace-observatory Uraniborg, located on the island of Ven in the Öresund between Denmark and Sweden. Tycho Brahe built it circa 1581.
