  We image with unprecedented spatial resolution and sensitivity disk features
that could be potential signs of planet-disk interaction. Two companion
candidates have been claimed in the disk around the young Herbig Ae/Be star
HD100546. Thus, this object serves as an excellent target for our investigation
of the natal environment of giant planets. We exploit the power of extreme
adaptive optics operating in conjunction with the new high-contrast imager
SPHERE to image HD100546 in scattered light. We obtain the first polarized
light observations of this source in the visible (with resolution as fine as 2
AU) and new H and K band total intensity images that we analyze with the
Pynpoint package. The disk shows a complex azimuthal morphology, where multiple
scattering of photons most likely plays an important role. High brightness
contrasts and arm-like structures are ubiquitous in the disk. A double-wing
structure (partly due to ADI processing) resembles a morphology newly observed
in inclined disks. Given the cavity size in the visible (11 AU), the CO
emission associated to the planet candidate 'c' might arise from within the
circumstellar disk. We find an extended emission in the K band at the expected
location of 'b'. The surrounding large-scale region is the brightest in
scattered light. There is no sign of any disk gap associated to 'b'.
