The most visited event at the Munich Trade Fair Center is the construction fair bauma, also the world's geographically largest fair, which takes place every three years and attracted some 580,000 visitors in 2016. Large public exhibitions are the f.re.e, the Heim + Handwerk and the Internationale Handwerksmesse. Important trade fairs include the ISPO, analytica, AUTOMATICA, BAU, and drinktec. Other exhibitions in Munich are EXPO REAL, IFAT, intersolar Europe, Laser World of Photonics, Transport Logistic, eCarTec and the yearly alternating productronica and electronica.