The current main building was constructed for Oscar O'Neill Oxholm in 1870 to a design by Henrik Steffens Sibbern.

The estate was founded by Baron Reinhard von Iselin, a prosperous, Swiss-born merchant and ship-owner from Copenhagen, who acquired the land in 1774 when the Crown sold Vordingborg Cavalry District in auction.

From 1776 to 1777 he constructed a large farm complex around an octagonal courtyard with the assistance of the architect Christian Joseph Zuber.

[4] Rosenfeldt's buildings are arranged around seven of eight sides of Zuber's octagonal courtyard, a layout which is reminiscent of that of Amalienborg in Copenhagen.

Zuber's original farm complex consists of four low pavilions and two tall stable buildings in Neoclassical style.