Uraniborg, an astronomical observatory operated by Tycho Brahe in Denmark. Tycho Brahe (1546-1601) was a Danish astronomer. After becoming interested in astronomy as a student in Copenhagen, Tycho Brahe realized the difficulty of making accurate measurements of celestial bodies with the instruments of the day. His designs for new methods and devices won him great fame. He was granted an estate on the island of Hven to conduct his research, and funding to built the Uraniborg observatory. From there he generated the most accurate astronomical data of his time. He was exiled to Prague in 1597 and was assisted in his work there by Johannes Kepler until his death. The sliding conical roofs to either side housed many of Tycho's elaborate instruments. In a library to the left was a great brass globe used to plot star positions.