Schloss Ernich, Neobaroque palace in Remagen, Germany

Schloss Ernich is a two- to three-storey neobaroque mansion with short side wings and a mansard roof. Its eleven-axis garden front faces the Rhine, with a three-axis projecting central bay that holds a single-storey entrance portal carrying a balcony, topped by a triangular pediment in classical forms.

Arnold von Guilleaume (1868–1939), a Cologne industrialist, had the house built from 1906 to 1908 to designs by court architect Ernst von Ihne, naming it after the field "Im Ernich". From 1949 to 1955 it was the residence of the French High Commissioner, and from 1955 to 1999 of the French ambassador. France bought the estate in 1959 and sold it in 2006 to film producer Ulrich Felsberg.

The palace served as a French diplomatic residence from 1949 to 1999, first housing the High Commissioner and later the Embassy. During this period it played a role in Franco-German relations in the region.

The estate sits at 134 meters elevation and connects to circular road 40 via a private winding road parallel to the Rhine. The approach follows the river landscape and fits naturally into the local terrain.

The outbuildings added after the main house were a coachman's dwelling, a bowling alley and a machine house; a large outdoor staircase followed in 1910. The bowling alley points to the leisure life of the Guilleaume family, who used the estate as a summer residence until 1930.