Art, artefacts, motorcycles. Where are the world’s best private collections?

Some of the most fascinating museums in the world were, at their very start, private collections of artwork, relics, natural ephemera or elaborate playthings put on display by their curious and wealthy owners. Hence the private museum was born. Today more and more collectors are putting their treasures on view in grand, spacious and eclectic spaces. Here are some must-see privately owned museums....

Photo - Barber Vintage Motorsports Museum, Birmingham, Alabama