An artwork by the abstract Dutch painter Piet Mondrian has been hanging upside down in various galleries for 75 years, an art historian has said. Despite the recent discovery, the work, entitled New York City I, will continue to be displayed the wrong way up to avoid it being damaged. The 1941 picture was first put on display at New York’s MoMA in 1945. It has hung at the art collection of the German state of North Rhine-Westphalia in Düsseldorf since 1980. Curator Susanne Meyer-Büser noticed the longstanding error when researching the museum’s new show on the artist earlier this year, but warned it could disintegrate if it was hung the right side up now. New York City I is an adhesive-tape version of the similarly named New York City painting by the same artist.(BBC)…[+]