  The varied surfaces and atmospheres of planets make them interesting places
to live, explore, and study from afar. Unfortunately, the great distance to
exoplanets makes it impossible to resolve their disk with current or near-term
technology. It is still possible, however, to deduce spatial inhomogeneities in
exoplanets provided that different regions are visible at different times --
this can be due to rotation, orbital motion, and occultations by a star,
planet, or moon. Astronomers have so far constructed maps of thermal emission
and albedo for short period giant exoplanets. These maps constrain atmospheric
dynamics and cloud patterns in exotic atmospheres. In the future,
exo-cartography could yield surface maps of terrestrial planets, hinting at the
geophysical and geochemical processes that shape them.
