Mars Express is the European mission
to Mars, their first. It has only
recently arrived and started to turn
out images and results. One advantage
over NASA missions is that
Mars Express can take "true"
color pictures:
You might need to click on the image
and look at the full-size version to
see the great layered cliff views.
The Europeans seem not to have
figured out how big a deal a good
web page could and should be, nor
are they apparently big on
informative captions.