Marienborg, a mid 18th-century country house perched on a small hilltop on the northern shore of Bagsværd Lake, Lyngby-Taarbæk Municipality, 15 kilometres (9.3 mi) north of downtown Copenhagen, has served as the official residence of Denmark's prime minister since 1962.

It is frequently used for governmental conferences, summits and other official purposes, including the prime minister's new year speech.

In the 18th century, the region north of Copenhagen became popular for its scenic views and opportunities for recreation with the surrounding meadows, woods and lakes, with many summer residences being built.

Marienborg is one of several properties which were sold off from the Frederiksdal estate from the middle of the 18th century and used for the construction of country houses.

The main building was constructed in around 1745 for the naval officer and director of the Danish Asiatic Company Olfert Fas Fischer.

Behagen was succeeded by Werner Hans Rudolph Rosenkrantz Giedde, a chamberlain and enthusiastic amateur flutist and composer.

The buyer, Johann Traugott Lebrecht Otto (1766–1824), had served as garrison surgeon on Saint Thomas in the Danish West Indies.

Jens Otto Krag did not wish to use Marienborg and the property was therefore put at the disposal of his foreign minister, Per Hækkerup.

Anker Jørgensen became famous for preferring his modest apartment in the rundown Sydhavnen neighborhood of Copenhagen to Marienborg.

[4] Anders Fogh Rasmussen started a new practice of using Marienborg mainly as a venue for political meetings and other official functions.

Today, Marienborg stands out as a restored classicist estate with a few carefully selected modern accents.