TheSolarExplorationCenterisalandmarkbuildingbuilttogowiththe6thgenerationoftheChiayiTropicofCancersigns.Theset-upprocessoftheTropicofCancersignswentthroughalotofdifficultiessincetheJapaneseoccupationofTaiwanuntiltheestablishmentoftheSolarExplorationCenter.ThefirstgenerationoftheTropicofCancerlandmarkwasbuiltin1908,thefirstlandmarktowerintheworld.Itwasbuilttocelebratethecompletionofthenorth-southrailwayconstructionandwasrestoredfivetimesafterwards.The6thgenerationsignswerefinishedin1995.TheChiayiCountygovernmentmadeitascientificeducationcenterofthelineandremodeledthesignsofallsixgenerations.Theychosethe"sun"asthetheme,withhelpfromtheNationalMuseumofNaturalScience,determineditseducationalmissiononastronomy,andstartedopentothepublicafterfinishingalltheredecorationin2005.Theentrancefeeisfreenow.TheSolarExplorationCenterinShueishangTownship,ChiayiCounty,isthelargestcitylandmarkamongthose16countrieswheretheTropicofCancergoesthrough.TaiwanisalsothebiggestislandontheTropicofCancer.TheoutlookoftheSolarExplorationCenterislikeaspaceshuttle.Therearefivelevelsinthebuilding.OnFloor1istheAstronomyEducationCenteronFloor2,3,and4aretheAstronomyClassroomsandonFloor5istheSolarThemeExhibitionHall.TherearealsoelevatedplatformsandareastowatchviewsindistanceforpeopletooverseethewholeSolarExplorationCenter.