On his death, Gabriel de Rumine, son of Russian nobility, left the city of Lausanne 1.5 million Swiss Francs to erect a building for the use of the public. Building began in 1892 according to the design of the Lyonnais architect Gaspard André. The building was inaugurated on the 3 November 1902, although building work continued until 1904.
On 24 July 1923, the Treaty of Lausanne was signed in Palais de Rumine.
It housed facilities such as the library of the University of Lausanne, and scientific and artistic collections belonging to the Canton of Vaud. In the 1980s, the university moved to its current location by Lake Geneva due to lack of space, and the Palais was restructured.
The building currently hosts one of the three sites of the Cantonal and University Library of Lausanne. Additionally, it contains several museums like Musée cantonal des beaux-arts (Cantonal Museum of Fine Arts), Musée cantonal d'archéologie et d'histoire (Cantonal Museum of Archeology and History) and Musée monétaire cantonal (Cantonal Museum of Money).References:
First record of Kastelholma (or Kastelholm) castle is from the year 1388 in the contract of Queen Margaret I of Denmark, where a large portion of the inheritance of Bo Jonsson Grip was given to the queen. The heyday of the castle was in the 15th and 16th centuries when it was administrated by Danish and Swedish kings and stewards of the realms. Kastelhoma was expanded and enhanced several times.
In the end of 16th century castle was owned by the previous queen Catherine Jagellon (Stenbock), an enemy of the King of Sweden Eric XIV. King Eric conquered Kastelholma in 1599 and all defending officers were taken to Turku and executed. The castle was damaged under the siege and it took 30 years to renovate it.
In 1634 Åland was joined with the County of Åbo and Björneborg and Kastelholma lost its administrative status.