  We present the magnetic landscape of the polar region of the Sun that is
unprecedented in terms of high spatial resolution, large field of view, and
polarimetric precision. These observations were carried out with the Solar
Optical Telescope aboard \emph{Hinode}. Using a Milne-Eddington inversion, we
found many vertically-oriented magnetic flux tubes with field strength as
strong as 1 kG that are scattered in latitude between 70-90 degree. They all
have the same polarity, consistent with the global polarity of the polar
region. The field vectors were observed to diverge from the center of the flux
elements, consistent with a view of magnetic fields that expand and fan out
with height. The polar region is also covered with ubiquitous horizontal
fields. The polar regions are the source of the fast solar wind channelled
along unipolar coronal magnetic fields whose photospheric source is evidently
rooted in the strong field, vertical patches of flux. We conjecture that
vertical flux tubes with large expansion around the photosphere-corona boundary
serve as efficient chimneys for Alfven waves that accelerate the solar wind.
