The first mention of 'Korsør' dates from 1241, and it is from this period that the medieval tower dates. The tower - part of a complex of buildings that constituted Korsør Castle - was demolished in the early 1800s.
The Great Magazine was constructed by order of Christian IV around 1610. On the first floor Korsør Town and Crossing Museum can be found. On the ground floor function as Korsør Town’s exhibition and event centre, while the basement and top floors serve as storage for the Museum’s extensive collections.
The Local History Archives for Korsør and Environs are located in the 'Commandants Residence' – a wood-faced, half-timbered building from the 1720s - as well as the adjoining harbourmasters residence dating from 1884.
The red-painted half-timbered house across from the tower dates from 1826, and was originally built for the storage of gun carriages. The building has, over the years, served variously as a youth hostel and a museum. Today it is the meeting place of the Marine Society as well as housing their historic collection.
The small guardhouse from the mid 19th century serves as a coffee house in the summer time. The ramparts surrounding the fortress area were constructed by order of the Swedish, during their occupation of Korsør from 1658-60.The fortress area bears the marks of many different historical periods, making it a site of unique historical interest.
References:La Hougue Bie is a Neolithic ritual site which was in use around 3500 BC. Hougue is a Jèrriais/Norman language word meaning a \'mound\' and comes from the Old Norse word haugr. The site consists of 18.6m long passage chamber covered by a 12.2m high mound. The site was first excavated in 1925 by the Société Jersiaise. Fragments of twenty vase supports were found along with the scattered remains of at least eight individuals. Gravegoods, mostly pottery, were also present. At some time in the past, the site had evidently been entered and ransacked.
In Western Europe, it is one of the largest and best preserved passage graves and the most impressive and best preserved monument of Armorican Passage Grave group. Although they are termed \'passage graves\', they were ceremonial sites, whose function was more similar to churches or cathedrals, where burials were incidental.