The Observatory building accommodates not only the University Museum's Centre for Astronomy, but also other organisations. They are the following:
- The offices and book and telescope shop of the Ursa Astronomical Association. PLEASE NOTE! Ursa organizes stargazing shows at Ursa's observatory tower in Kaivopuisto park.
- The University's Almanac Office sells the publishing rights, other calendaric information and ready-made templates to calendar publishers. Every year, the Almanac Office puts out its traditional Yliopiston almanakka (University Almanac).
- The restaurant is located in the west wing of the Observatory building. The new restaurant / cafe contact details will be updated here soon.