Trinitatis Complex is located in central Copenhagen, Denmark. The 17th century building complex includes a church, university library, and astronomical observatory. Its features include the Trinitatis Church and the Rundetårn astronomical observatory tower, Rundetårn itself notable as Europe's oldest functioning observatory. The complex is of a Dutch Baroque design by Hans van Steenwinckel the Younger.
- Mouritsen, Lone (3 May 2010). The Rough Guide to Copenhagen. Penguin. pp. 50–. ISBN 978-1-84836-958-0. Retrieved 15 December 2012.
- Bergmann, Sigurd (30 November 2011). Theology in Built Environments: Exploring Religion, Architecture, and Design. Transaction Publishers. pp. 173–. ISBN 978-1-4128-4580-9. Retrieved 15 December 2012.