  We report the discovery of an extremely curved jet in the high frequency
peaking GPS quasar PKS 2136+141. Our multi-frequency VLBA images show a bending
jet making a turn-around of 210 degrees on the plane of the sky, which is, to
our knowledge, the largest ever observed change in a structural position angle
of an extragalactic jet. Images taken at six different frequencies, from 2 to
43 GHz, beautifully reveal a spiral-like trajectory. We discuss possibilities
to constrain the 3-D geometry of the source and suggest that it could be used
as a testbed for models describing the bending of the relativistic jets.
