Then followed the two lots at the corners of the axially symmetric street Frederiksgade that marked the entrance to Amalienborg from Norgesgade (now Bredgade).

In return for 30 years of freedom from property taxes, the two privy councilors Frederik Ludvig von Dehn and Count Johann Hartwig Ernst von Bernstorff committed themselves to building the two identical town mansions that were called for in Eigtved's masterplan.

Dehn and Bernstorff commissioned the architect Johann Gottfried Rosenberg to design and construct the two buildings.

[2] Dehn was appointed to stadtholder in Schleswig-Holstein in 1762 and therefore ended up selling his town mansion in Copenhagen to Ditlev Reventlow in 1766.

In 1810 the mansion was purchased for speculative reasons by a consortium consisting of Frederik Julius Kaas, William Duntzfelt and Niels Rosenkrantz.

Christopher MacEvoy Jr., a merchant and planter from Saint Croix in the Danish West Indies, purchased the mansion in 1819.

Jonathan F. Woodside, who served as the Chargé d'affairs of the United States resided in the building with two maids, a female cook, a coachman, a stableman and a male servant.

His brother-in-law, Prince Frederick William of Hesse-Kassel, heir to the Danish throne until 1852, purchased the mansion in 1844.

The main facades towards Bredgade consist of three three-storey pavilions with Mansard roofs connected by lower, two-storey sections.

The facade has ear-lesenes (i.e. small square and the central pavilions also have pilasters with highly decorated capitals and grooves at the ground floor level.