Viking Age ring fortresses

World Heritage

Denmark

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The Viking Age ring fortress complex consists of five archaeological sites that share the same geometric structure. They were built between 970 and 980 AD at strategic land and sea fortresses in Aggersborg, Fyrkat, Nonnebakken, Trelleborg and Borgring, and incorporated the surrounding natural features into the fortifications. The fortress complex reflects the centralization of the Jelling dynasty and bears witness to the sociopolitical changes that the Kingdom of Denmark underwent in the late 10th century.

# Archaeological sites

# Ring fortress

# Jelling Dynasty

# centralization

# Sociopolitical changes

# Strategic Fortress