The Bornholm Museum offers an insight into the history of Rønne and the island of Bornholm, from the Paleolithic era to the modern age, including the occupation during World War II. The museum houses a number of Nordic Bronze Age and Iron Age artefacts relating to the island and has a Mjolnir, discovered in Bornholm but now housed in the National Museum of Denmark. It also has a notable collection of Roman coins, pottery and paintings.
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The central square, was used for military parades.
Built in 1806 and now a museum.
Was built as a guard house in 1744 with bricks from Hammershus which was being demolished at the time. It is the oldest brick house in the town.
Built in 1823 is Denmark's oldest provincial theatre still in active use.
With another distinctive tower was built 1917-1918 and consecrated 6 January 1918.
St Nicolas's Church
With its distinctive tower, is part of the Diocese of Copenhagen and in its present form was enlarged and fully refurbished in 1918. It stands on the site of an earlier church or chapel from the 13th century of which some sections can still be seen.