Here is a system that I have been toying with. (the size of our moon is represented by the green circle for scale)
And some photoshopping work to show what it would look like with an Earthlike atmosphere:
Here is the original image for these mountains if anyone wanted to know where I found it.The view is from an earth-mass moon orbiting a currently unnamed planet of ~3 Jupiter masses. The planet has six moons large enough to be considered planets if they were independent, with the 2nd largest, a 0.9 earth-mass moon, visible to the right of the planet in the first picture. The "larger" rocky body is a submoon at a distance of just 33,000 kilometers, just under four times the distance that Phobos orbits Mars. Despite it's apparent radius, the submoon has a mass of only 6% of that which our moon has, and thus it manages to have a somewhat stable orbit around it's host. Though they aren't all visible, there are at least twelve moons orbiting this planet, including two pairs of moons suspended at L4 and L5 Lagrange points around the two largest moons.
The rest of the system isn't shown, other than another gas giant to the right in the first screen, but it's a triple star system, with a 4.5 solar-mass star, an orange dwarf at ~5AU, which this blue gas giant orbits, and a red dwarf that is nearly ~600AU away. The entire system has about 20 planets, though the orange dwarf "only" has 5 planets.
