The world's most famous museums reveal their major collections and the fascinating stories of how they came to house them. This beautiful high-definition series shows what the royalty, nobility and fabulously wealthy inhabitants of France, Italy, Switzerland, Austria, the UK and the USA, the original owners of the collections, found beautiful enough to acquire. The stories behind the works and their artists are an intriguing insight into the world and times from which they came. How did Da Vinci's Mona Lisa, arguably the most famous painting in the world, end up in a French museum?