Italian artist Salvatore Garau has created several invisible sculptures (Credit: Salvatore Garau, via Instagram)

Some artists seem to excel at impressing the world with artwork that can only be called unusual at best. First, there was Maurizio Cattelan's Comedian, a series of three sculptures — each comprising a single banana affixed to a wall with duct tape — that sold for $120,000 apiece in 2019. Now, contemporary Italian artist Salvatore Garau has managed to sell an immaterial, or imaginary, masterpiece to an anonymous buyer for an astonishing 15,000 euros (about $18,000)!