  We present a detailed analysis of the morphological properties of the Crab
Nebula across the electromagnetic spectrum based on new and previous
high-quality data from radio to X-rays. In the radio range we obtained an image
of the entire nebula at 3 GHz with subarcsecond angular resolution using the
VLA (NRAO) and an image at 100 GHz of the central region using the ALMA array.
Simultaneously with the VLA observations we performed HST WFPC3 near infrared
and Chandra X-ray observations of the central region of the nebula. In addition
we produced a new UV image of the Crab nebula at 291 nm by co-adding 75
individual exposures of the Optical-UV Monitor on board XMM-Newton. The
high-angular resolution and high-dynamic range radio image at 3 GHz allowed us
to improve the detection and characterization of peculiar morphological
features including arches with foot brightening and intercrossed loop-like
structures, likely originating in plasma confined to magnetic field lines.
Based on the new radio image, we carried out a detailed multiwavelength
correlation. In the central area, the comparison of the almost simultaneous
images confirms that the wisps in the three spectral ranges do not generally
coincide in location, the radio emission being the most discordant, which is
suggestive of the existence of two different synchrotron components. The X-ray
pulsar jet does not have a radio counterpart.
  Instead, another jet-like feature is seen in radio, though with different
curvature and starting point.
