Wall Art At Deutsche Oper Berlin

A friend let me know there was an art exhibition here ( well at the back ) of Deutsche Oper  which is the biggest opera house in Berlin , seating 1859 people .Bombed in 1943,  rebuilt in 1961 it's very modern. However a wall at the rear is concrete & dull. Hence the exhibition 'paste up ' has been allowed . My main is hanging from trees at the front of the theatre . The extra shows an entry 'Spirals 'from a Serbian artist NADA@muralsofhope .Whilst there I met an artist pasting his work and he told me that Deutsche Oper will say yes or no to more such work in a few weeks .It  all looks beautiful so here's hoping .. A few more visits are called for .