There are a number of dolmens on Røsnæs. Dolmens are stone age graves comprising of a number of stone blocks.
Vor Frue Kirke
Five-towered church built around 1220 by Esbern Snare's daughter, Ingeborg. It is in the centre of the medieval High Town of Kalundborg. This church is unique with its Greek cross outlay (symbolising The Holy Jerusalem) with a tower in each end and a 41-m tower in the middle. In 1827, the middle tower crashed and was rebuilt in 1871. Notice the famous altar tablet from 1650.
City museum of historical and cultural development in and around Kalundborg from the oldest times till now in an old farm dating to around 1600. Most famous exhibitions are local clothes exhibition and an exhibition of a Viking settlement excavation.
Biskopbolig
Built in 1450-1480 by the bishop of Roskilde who lived there when visiting the town. From 1854, part of the building was used as town hall and the basement as prison. In 1971, the building was renovated and used for town council meetings.
Præstebolig
Built in the beginning of the 16th century and one of the oldest remaining residential buildings in northern Europe. Was converted to a hospital in 1854.
Ulstrup Mølle
Dutch gallery mill. The cap of the mill could be turned manually to make the sails face the wind. The mill was built in 1894 where a previous mill had burned down. The mill was in use until 1956 and has been renovated.
Røsnæs Kirke
Built in the 13th century.