Time Periods
Paleolithic
Mesolithic
Neolithic
Chalcolithic
Bronze Age
Iron Age
Classical Period
Post-Classical Period
Early Modern Period
Industrial Period
Contemporary Period
Time Periods
Paleolithic
Mesolithic
Neolithic
Chalcolithic
Bronze Age
Iron Age
Classical Period
Post-Classical Period
Early Modern Period
Industrial Period
Contemporary Period
Location
About
Nonnebakken is an archaeological site located on a hill in Odense, Denmark, notable for its Viking ring castle constructed between 980 and 1000 CE during the reign of Sweyn Forkbeard. This defensive structure was strategically positioned to control the Odense River. The site also housed a Benedictine nunnery until the end of the 12th century when the nuns relocated. The remains of the circular castle, with its significant earthwork ramparts, were heavily damaged in the late 19th century due to modern construction. However, 20th-century archaeological excavations uncovered the castle's original dimensions and features, affirming its historical significance. In 2023, Nonnebakken, along with other Viking ring castles in Denmark, was inscribed on the UNESCO World Heritage List for its architectural uniqueness and historical significance.
Gallery
Explore photographs of ancient structures, artifacts, and archaeological excavations at Nonnebakken

Archaeological Features
Explore the unique architectural and cultural elements found at this historical site
Defensive Structures
Religious and Ritual Structures
Historical Timeline
Journey through time and discover key events in this site's archaeological history
Plan Your Visit
Details
- Country
- Denmark
- Source
- Wikipedia
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