Turn right from the Colosseum and walk awhile or hop aboard a bus, and prepare to be amazed by the ruins of the Palatine Hill, foremost among which is the Roman Forum. As you walk, you stand side-by-side with centuries-old stones, pillars, and temples, all of whom are spread across vast expanses. The front porch of the Temple of Saturn stands tall among the other ruins of what was once the most important place in Rome. It was at this marketplace that emperors celebrated their victories with raucous processions, trials were held to decide the fortunes of wrongdoers, and gladiators fought for life and fame. Most significantly, it is here that the great Julius Caesar's remains are to be found.
Tip: There is a fee to enter the Palatine Hill/Roman Forum, but you enjoy a wonderful bird's eye view of the ruins from many points in the city.