The modern exposition cases at the Amber Museum have magnifying glass that reveals insects, arachnids, centipedes and molluscs in all their finery. Even though the internal organs of the organisms that have been trapped in these pieces of amber have usually already decayed, the exterior of their structure has been preserved to the finest detail. Sometimes viewers might be mistaken for thinking they are looking at live insects and not 50 million year old inclusions. This allows scientists to precisely desribe and identify the organisms that were living in this period. Two-winged insects (Diptera) make up the largest group of insects, over half of all the inclusions discovered thus far.