Even with just a pair of binoculars you can see four moons. It’s very cool. You can see them lined up on their gravitational plane. They change sides as they rotate around the planet. So you might look and see:
O .. . .
Then you look at another time and see:
. . O . .
or
. . . O .
etc.
There is an astronomy museum here that gives public tours and has an old telescope. I got to see Jupiter and the moons and Saturn and the rings. It was really, really cool.
. . O . last night