It is a Swiss heritage site of national significance.

In 1801 it was acquired the Roberti family of Moudon, and in 1870 it was bought by Adolphe Gaiffe.

Beginning in 1880, a library was built in the castle.

Today it houses 17,000 volumes and is one of the largest private collections of French novelists of the 18th century in Europe.

The castle was bought in 1936 by the Association pour la Conservation du château d'Oron, which was founded to preserve the castle two years earlier.