Celsiushuset, Former astronomical observatory in Uppsala, Sweden
The three-story stone building at Svartbäcksgatan features original medieval architecture integrated with eighteenth-century astronomical observatory modifications.
Anders Celsius established Sweden's first university observatory in this building during 1738, transforming it from a medieval charitable institution into a center for astronomical research.
The structure housed multiple student organizations, including the Södermanlands-Nerikes nation from 1855 to 1865, and served as a rehearsal space for musical groups.
The building currently belongs to Uppsala University and contains the Centre for Environmental and Development Studies, with commercial spaces on the ground floor.
The students named it 'Oratio obliqua' due to its tilted position relative to Svartbäcksgatan street, reflecting its construction before the city's linear planning.
Location: Uppsala Municipality
Location: Uppsala
Floors above the ground: 3
GPS coordinates: 59.85983,17.63693
Latest update: March 13, 2025 12:32
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