In the case of the Louvre, officially known as Palais du Louvre (the Palace of the Louvre), the main building used today was formerly the fortress of King Philip Augustus in the 12th century.

• 以卢浮宫来说（正式名称为罗浮之宫殿），现今所用的主要建筑以前是12世纪时菲利浦?奥古斯都国王的堡垒。