The first known owner of Koberg was knight Erik Nipertz in the 15th century. Later it has been owned for example by royal Vasa and Leijonhufvud (Lewenhaupt) families. The oldest eastern part of the castle dates from the mid-1400s, the middle part from 1620s and the western part from the late 1700s. The other estate buildings were built in Neo-Romantic style in 1900-1904. Today Koberg castle is the residence of Princess Désirée, Baroness Silfverschiöld and her husband Baron Nicklas Silfverschiöld.
References:The historical centre of Briançon is a strongly fortified town, built by Vauban to defend the region from Austrians in the 17th century. Its streets are very steep and narrow, though picturesque. Briançon lies at the foot of the descent from the Col de Montgenèvre, giving access to Turin, so a great number of other fortifications have been constructed on the surrounding heights, especially towards the east.
The Savoyards made two raids into French territory in 1691 and 1692. As a result, Vauban was dispatched to inspect the frontier defences, which had been ill-equiped to deal with the attack from Savoy. He returned to the area in 1700 to check on the progress that had been made since his first visit. When Vauban visited Briançon, work on the defences had already started under a local engineer, Monsieur d"Angrogne in 1692.