A long-lost work thought to be by Caravaggio has been discovered in a leaking attic in Toulouse, France, where it had sat untouched for more than 150 years after an ancestor, who as an officer of Napoleon's army, brought it to the country.

The discovery – which could be worth €120 million – is being heralded as a "momentous occasion" by experts.

But while the Caravaggio is an incredible find, there are still dozens of rare and valuable paintings missing in the world. Here are the top 10 most-wanted, according to the Art Loss Register:

Lucian Freud's Francis Bacon