The 3D structure of the Galactic bulge
  We review the observational evidences concerning the three-dimensional
structure of the Galactic bulge. Although the inner few kpc of our Galaxy are
normally referred to as {\it the bulge}, all the observations demonstrate that
this region is dominated by a bar, i.e., the bulge is a bar. The bar has a
boxy/peanut (X\--shaped) structure in its outer regions, while it seems to
become less and less elongated in its innermost region. A thinner and longer
structure departing from the main bar has also been found, although the
observational evidences that support the scenario of two separate structures
has been recently challenged. Metal poor stars ([Fe/H]$\lesssim -0.5$ dex)
trace a different structure, and also have different kinematics.
