The ticket cost to enter the Pantheon was €5 for an adult ticket. It is stunning both outside and in. On the outside the original pillars, from AD125, of the portico and the gigantic bronze doors to enter are stunning. On the inside, the massive dome, (and its hole, the 'oculus'), are also a sight to behold. The Pantheon houses the tombs of two of Italy's King's and also that of the famous artist, Raphael. It really is a must see marvel of ancient Rome that still stands today.