Latest Trafalgar Square fourth plinth artwork recreates destroyed Iraqi sculpture More than two decades ago, Britain's Royal Society of Art decided something needed to be done with a prominent but empty space in the middle of London's famed Trafalgar Square. The society chose to make it a showcase for works from a rotating group of artists. This year, an American artist came up with a tribute to the lost heritage of Iraq destroyed by ISIS. Roxana Saberi reports.