Berlin and Biesenbach, 25 years on

When the KW Institute for Contemporary Art was established in Berlin 25 years ago, the Berlin Wall had just come down and Klaus Biesenbach, its founding director, was still a medical student. What began as a student-run project in an abandoned factory evolved into a leading contemporary art institution, giving birth to the Berlin Biennale and some of Germanys most acclaimedand controversialexhibitions. As KW celebrates its quarter-century and reopens this weekend after extensive refurbishment,