The Liselund Gl. Slot museum is a Romantic park featuring various buildings, works of sculpture and paths leading through the surrounding woodland areas to the Møns Klint cliffs.
The country house, which has been owned by the Rosenkrantz family since 1843, was turned into a museum in 1938.

With its garden and park areas surrounding the Gamle Slot (Old Country House), Det Norske Hus (Norwegian House), Kinahytten (Chinese Cottage) and other smaller buildings, as well as the sculptures on display in the park, Liselund Gl. Slot is an excellent expression of Enlightenment "natural philosophy", which became known in Denmark at the end of the eighteenth century.
In 1999, garden architect Sven-Ingvar Andersson wrote:
"Romantic gardens convey an appearance of being accidental. This appearance is, however, very carefully planned. There is a very fine line between conscious intent and degeneration, which makes this type of garden art highly vulnerable."
The park and the buildings in it were designed by Anders Kirkerup (1749-1819) for the titular privy councillor, chamberlain and prefect of Møn, Gérard Antoine de Bosc de la Calmette and his wife Catharina Elisabeth Iselin, known on more familiar terms as Lisa.
After having married in 1777, the couple purchased the Sømarkegården estate in 1783, and hired Anders Kirkerup to design the buildings and arrange the park during 1792-93, as Joseph Chr. Lillie (1760-1827) was assigned the task of designing the very tastefully decorated interiors and wall ornamentation.
The estate was named after Lisa de la Calmette.

Well versed in European art of the Neoclassical period, the couple became acquainted on trips through Europe with the way in which Rousseau''s thought had influenced Romantic garden art, and their diaries reveal the various ideas they brought home from these travels.
The results of their involvement in this work can be traced back to the M. Westenholdt''s survey of the property carried out in 1791, when de la Calmette began laying out the park that still forms the framework within which Liselund Gl. Slot is set.

Today, a stroll through the museum''s garden and park can be combined with a visit to the Liselund Gamle Slot during the time periods listed above.