Visit the Pantheon. by worldkiwi
After the Trevi Fountain, this had to be my second favourite place. It is one of the most ancient buildings in Rome, apparently dating back to the first century! Entrance is free and if you are lucky, get into one of the free tours there. At noon the sunlight shines through a hole in the roof and a beam of dusty sunshine pierces through the dark and illuminates the entry-way. The dome is huge and was the inspiration for the great cathedral dome makers of later times. The architectural bits of trivia are mind blowing. The last King of Italy is buried there as is the painter Raphael. Don't miss the Pantheon. It is truly impressive.