1576 CE
Tycho Brahe Builds Uraniborg
About this moment
Uraniborg was an astronomical observatory and alchemy laboratory established and operated by the Danish astronomer Tycho Brahe. It was the first custom-built observatory in modern Europe, and the last to be built without a telescope as its primary instrument. Uraniborg was built c. 1576 – c. 1580 on Ven, an island in the Öresund between Zealand and Scania, Sweden, which was part of Denmark at the time.