Boston's Isabella Stewart Gardner Museum is known as a "palace turned inside out" because of its beautiful courtyard. In 1990, the Gardner was robbed of 13 paintings worth a collective £370 million, the largest property theft in history.

The Louvre's main entrance is illuminated at night. The world's biggest art museum, the Louvre was robbed in 1911 when museum security was much more lax.

Arguably the world's most famous work of art, the ”Mona Lisa” is now displayed behind thick plexiglass and a wooden barrier to protect it from the 15,000 visitors who flock to the Louvre each day.

Named for a former Prime Minister of Egypt, the Mohammed Mahmoud Khalil Museum in Cairo, Egypt — notable for its collection of Impressionist and Post-Impressionist works — was robbed in 1978 and 2010.

Post-Impressionist Vincent van Gogh's ”Poppy Flowers,” also known as ”Vase and Flowers,” was stolen twice from the Mohammed Mahmoud Khalil Museum. Worth at least £37 million, it remains missing.

The Montreal Museum of Fine Arts was, in 1972, the site of the 'Skylight Caper': Armed thieves rappelled through a skylight and made off with £1.5 million worth of paintings and jewellery.

The MMFA's then-Director of Public Relations examines photos of the 18 paintings stolen in the 1972 heist. Due to the dramatic method of entry, police suspected the thieves were experienced members of an international crime ring.

Vienna's Fälschermuseum (in English, the Museum of Art Fakes) displays forgeries of famous masterworks.

'The Procuress,' believed to be a forgery by Han van Meegeren, is one of the famous forgeries on the walls of the Museum of Art Fakes.