A painting said to be Canaletto's "greatest" depiction of Venice during his decade spent in England is expected to sell for more than 30 million dollars (£22.5 million) at auction in New York.The Bucintoro At The Molo On Ascension Day, which depicts the Feast of the Ascension, was last auctioned by Christie's in July 2005 when it sold for £11,432,000.

A painting said to be Canaletto's "greatest" depiction of Venice during his decade spent in England is expected to sell for more than 30 million dollars (£22.5 million) at auction in New York.The Bucintoro At The Molo On Ascension Day, which depicts the Feast of the Ascension, was last auctioned by Christie's in July 2005 when it sold for £11,432,000.