Coruscant is the capital of the Republic and the Galactic Empire, it was ment to feature in Episode IV, but the budget wouldn't allow it, so they replaced what was ment to take place on Coruscant, with what happened on the Death Star. It is featured in episodes I, II and III. Coruscant is an entire planet covered by an entire City. The Jedi Temple is found on Coruscant, along with the senate.
