  The color-magnitude diagrams of $\sim 5\times 10^5$ stars obtained for 13
fields towards the Galactic bulge with the OGLE project reveal a well-defined
population of bulge red clump stars. We find that the distributions of the
extinction-adjusted apparent magnitudes of the red clump stars in fields lying
at $l=\pm5\deg$ in galactic longitude differ by $0.37\pm0.025\;mag$. Assuming
that the intrinsic luminosity distribution of the red clump stars is the same
on both sides of the Galactic center, this implies that the distances to the
red clump stars in the two fields differ by a factor of $1.185\pm0.015$. A
plausible explanation of the observed difference in the luminosity distribution
is that the Galactic bulge is a triaxial structure, or bar, which is inclined
to the line of sight by no more than $45\deg$, with the part of the bar at the
positive galactic longitude being closer to us. This agrees rather well with
other studies indicating the presence of the bar in the center of the Galaxy.
Color-magnitude diagram data are accessible over the computer network with
anonymous {\tt ftp}.
