ague , ▁the ▁cer am ist , ▁Joan ▁Gard y ▁Art ig as , ▁and ▁is ▁made ▁of ▁ 7 , 2 0 0 ▁cer am ic ▁t iles . ▁It ▁has ▁been ▁subject ▁to ▁de grad ation ▁due ▁to ▁air ▁poll ution ▁since ▁it ▁was ▁installed ▁in ▁ 1 9 7 9 . ▁ ▁Several ▁small ▁museum s ▁in ▁Ludwig sh afen ▁focus ▁on ▁the ▁city ' s ▁history , ▁first ▁of ▁all ▁the ▁Stadt museum ▁in ▁the ▁R ath aus ▁Center , ▁but ▁also ▁the ▁Sch iller haus ▁O gg ers heim , ▁K . O . ▁Braun - M useum ▁in ▁O pp au ▁or ▁the ▁Frank ent hal er ▁K anal ▁Museum ▁in ▁the ▁North . ▁ ▁The ▁Fach ho ch schule ▁Ludwig sh afen ▁( techn ical ▁college ) ▁special ises ▁in ▁econom ics ▁and ▁has ▁an ▁affili ated ▁Ost as ien inst itut ▁( E ast ▁Asia ▁Institute ). ▁There ▁is ▁also ▁the ▁Evangel ische ▁Fach ho ch schule ▁Ludwig sh afen , ▁special ising ▁in ▁social ▁sciences . ▁ ▁Econom y ▁Although ▁B AS F ▁is ▁by ▁far ▁the ▁most ▁important ▁industrial ▁company ▁in ▁Ludwig sh afen , ▁there ▁are ▁many ▁other ▁fir ms . ▁Trade ▁and ▁industry ▁in ▁Ludwig sh afen ▁have ▁about ▁ 9 0 , 0 0 0 ▁employees ▁in ▁total , ▁with ▁an ▁annual ▁total ▁turn over ▁of ▁nearly ▁ 1 7 ▁billion ▁eu ros . ▁ ▁B AS F ▁is ▁the ▁world ' s ▁leading ▁chemical ▁company , ▁employ ing ▁