Top billionaire property prices

Updated 3:29 AM ET, Thu March 21, 2013
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Hong Kong tops Savills index of the world's most expensive luxury real estate.
Japan's highest mountain Mount Fuji rises up behind the skyscrapers dotting the skyline of the Shinjuku area of Tokyo, where ultra luxury property sells an average of £5,000 ($7,550) per square foot. KAZUHIRO NOGI/afp/getty images
Ultra luxury property averages £3,500 per square foot ($5,900) in London, but a property in Kensington Palace Gardens sold for record $12,850 per square foot. Oli Scarff/Getty Images/file
Paris luxury homes averaged £2,900 ($4,384) per square feet. AFP/Getty Images
High-end luxury property in Moscow averages £2,800 per square feet ($4,233). KIRILL KUDRYAVTSEV/AFP/Getty Images
One World Trade Center, or the Freedom Tower, dominates the Lower Manhattan skyline as the new tallest building in New York City, where high-end property averages £2,700 ($4,083) per square feet. Getty Images
Shanghai top-end property averages £1,400 per square foot ($2,117). mark ralston/afp/getty images
A view of the Merlion and the central business district skyline in Singapore, where luxury property goes for £1,200 per square foot ($1,814). Suhaimi Abdullah/Getty Images
A man feeds pigeons outside the Taj Mahal Palace hotel in Mumbai, where luxury residential real estate averages £640 per square foot ($968). INDRANIL MUKHERJEE/AFP/Getty Images)
Sydney's iconic harbor is attracting more billionaire bargain hunters, where top-end real estate averages £580 per square foot ($877) according to Savills. courtesy sydney new year's eve