ACT4 - 25 YEARS brings together a quarter-century of WK (a.k.a. WK Interact)'s work, from the beginning in 1989 to the present day. It is effectively an anthology of his most important pieces. In the late 1990s, WK's images began appearing on buildings in downtown Manhattan, complimenting the constant stir of bodies and the perpetual motion of contemporary urban life in the fast-paced city. For 25 years WK has never stopped working on the street, from small pieces to huge murals.