▁Mer z . ▁ ▁August ▁Mack e ▁in ▁the ▁Kunst museum ▁ ▁Pr ints ▁collection ▁and ▁video ▁art ▁The ▁prints ▁collection , ▁featuring ▁around ▁ 5 , 0 0 0 ▁works ▁from ▁the ▁ 2 0 th ▁and ▁ 2 1 st ▁centuries , ▁includes ▁so - called ▁" multi ples " ▁by ▁Be u ys , ▁illustrated ▁books ▁by ▁Max ▁Ernst , ▁and ▁printed ▁graphics ▁from ▁the ▁B oll iger ▁Collection . ▁ ▁The ▁O ppen heim ▁Collection ▁of ▁video ▁art ▁includes ▁works ▁by ▁Dennis ▁O ppen heim , ▁Joan ▁Jon as , ▁Klaus ▁vom ▁Bru ch , ▁Marcel ▁O den bach ▁and ▁Julian ▁Rose feld t . ▁ ▁The ▁V ide on ale ▁festival ▁of ▁contemporary ▁video ▁art , ▁now ▁based ▁at ▁the ▁Kunst museum , ▁has ▁taken ▁place ▁bien n ial ly ▁in ▁Bonn ▁since ▁ 1 9 8 4 . ▁ ▁New ▁direction ▁ ▁In ▁ 2 0 0 5 , ▁the ▁museum ▁sold ▁the ▁former ▁Gro the ▁Collection ▁to ▁a ▁married ▁pair ▁of ▁collect ors , ▁the ▁Str öh ers , ▁for ▁€ 5 0 m . ▁ ▁This ▁triggered ▁a ▁wide - r anging ▁set ▁of ▁changes ▁to ▁the ▁permanent ▁exhibition , ▁beginning ▁in ▁ 2 0 0 7 , ▁described ▁by ▁the ▁incoming ▁director ▁Ste phan ▁Berg ▁as ▁a ▁" certain ▁re ju ven ation ". ▁The ▁works ▁on ▁the ▁way ▁out ▁included ▁D eg ener ate ▁Art ▁by ▁Sig mar ▁Pol ke ▁and ▁Ass isi ▁Cy cle ▁by ▁Got th ard ▁Gra ub ner .