Napoleonic looting of art

Napoleonic looting of art (French: Spoliations napoléoniennes) consisted of the confiscation of artworks and precious objects carried out by French troops and officials in the conquered territories of the French Republic and Empire, including the Italian Peninsula, Spain, Portugal, the Low Countries, and Central Europe. The looting began around 1794 and continued through Napoleon I's rule of France, until the Congress of Vienna in 1815 ordered the restitution of the works.

Source: Wikipedia — Napoleonic looting of art (CC BY-SA 4.0)