From 1942 to 1994, the Lohn Estate accommodated the official guests of the Swiss Confederation, which have included a number of heads of States and royalty.

[3][6] A few years later, they decided to replace the country house with a construction best suited to accommodating their growing family.

[3][5] In 1782, Tscharner hired the Bernese architect Carl Ahasver von Sinner to design and build the manor for his family.

[3][5] He purchased it with the indemnities of his divorce from his first wife Lydia Welti-Escher, who was accused of having cheated on him for over ten years with painter Karl Stauffer.

[3][6][11] In accordance with the wishes of Welti-Kammerer, the manor was used to accommodate heads of State and governments, as well as royalty, during their official stays in Switzerland.

[3][13][14] Federal Councillors Rudolf Gnägi and Willi Ritschard have also held press meetings in the estate.

[6] Another noteworthy element is that the house is not directed towards the view of the Alps, which was ostensibly neglected by von Sinner, but towards the main road and the Längenberg hills.

The corridor widens onto an octagonal hall at the centre of the house, featuring a staircase on one side and a large salon on the other.

[6] According to the art historian Monica Bilfinger, the vast majority of the objects in the manor, including the artwork and furniture, belonged to the Welti-Kammerer family.

[6] The manor also houses paintings from the extensive Welti collection, including works by Adriaen Brouwer, Ferdinand Hodler, Cuno Amiet, Albert Anker, Alexandre Calame, Marguerite Frey-Surbek and Rudolf Koller.