To celebrate the 80th anniversary of Batman this year, a huge Bat-Signal was projected in major cities around the globe on International Batman Day. To commemorate the Caped Crusader in Australia, fans were invited to dress up and head to the Australian Centre for the Moving Image (ACMI) in Melbourne’s Federation Square to see the Dark Knight’s call to arms. The Bat-Signal also appeared across skyscrapers and landmarks in Barcelona, Berlin, Johannesburg, London, Los Angeles, Mexico City, Montreal, New York, Paris, Rome, Sao Paulo and Tokyo. Comic fans first saw the Bat-Signal in Detective Comics #60 in 1942, when it was used as a distress call after Batman’s first meeting with the Joker. After that, Gotham City Police Department used the modified searchlight to contact and summon Batman in times…