Torhus building

It is housed in a round tower with walls 3.5 m (11 feet) thick known as Kastellet or the citadel. Built in 1744 for the town's defence, there was never any occasion for it to be used. The museum has numerous artefacts relating to military history such as guns, blades, bombs and uniforms.

Built in 1806 and now a museum.

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.

A slender white-painted octagonal tower in cast iron, stands on the waterfront not far from the church. Constructed in 1880, it was decommissioned in 1989.

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.

The central square, was used for military parades.