Jupiter

This gas giant is the largest planet in the Sol System.

See

Io (natural)
Thanks to tidal heating, Io experiences extreme geologic activity, making it the driest and most volcanically active object in the Sol System.

Europa (natural)
Europa's icy surface makes it one of the most reflective moons in the Sol System.

Ganymede (natural)
Ganymede is the Sol System's largest moon and the only one with a magnetosphere. It is bigger than Mercury and only slightly smaller than Mars.

IMS Bolliver (artificial)
Though it is no longer in active service since the Marine forces stationed here were reassigned to Mars, the base remains strictly off limits.

Callisto (natural)
The tidally locked surface of Callisto is the oldest and most heavily cratered in Sol.