Photo taken on Jan. 18, 2018 shows a replica of the repeating catapult of Dionysis of Alexandria at the Museum of Ancient Greek Technology in Athens, Greece. The Museum of Ancient Greek Technology, a new museum dedicated to the impressive technological achievements of ancient Greeks, has opened its doors to the public in Athens this January. It is the first and only of its kind in Greece, offering locals and foreigners insight into pioneering inventions which have laid the foundations to modern technology. (Xinhua/Lefteris Partsalis)