  This article summarizes recent work on the luminosity and mass distribution
of the Galactic bulge and disk, and on the mass of the Milky Way's dark halo. A
new luminosity model consistent with the COBE NIR data and the apparent
magnitude distributions of bulge clump giant stars has bulge/bar length of
$\simeq 3.5\kpc$, axis ratios of 1:(0.3-0.4):0.3, and short disk scale-length
($\simeq 2.1\kpc$). Gas-dynamical flows in the potential of this model with
constant M/L fit the terminal velocities in $10\deg\le |l| \le 50\deg$ very
well. The luminous mass distribution with this M/L is consistent with the
surface density of known matter near the Sun, but still underpredicts the
microlensing optical depth towards the bulge. Together, these facts argue
strongly for a massive, near-maximal disk in our $\sim L^\ast$, Sbc spiral
Galaxy. While the outer rotation curve and global mass distribution are not as
readily measured as in similar spiral galaxies, the dark halo mass estimated
from satellite velocities is consistent with a flat rotation curve continuing
on from the luminous mass distribution.
