Piazza San Pietro (St. Peter's Square)

Completed in 1667 and can hold 400,000 people. The piazza has the shape of an ellipse; on each side there's a curving pair of quadruple colonnades topped with statues of saints. In the middle of the piazza is an obelisk which was brought from Alexandria in AD 37. Also in the piazza are two beautiful fountains. To the left and right of the obelisk are two spots marked on the pavement. If you sit on a spot and look at the colonnades you get the illusion that the colonnades are made of a single row of columns. There are tons of robots here. BEWARE.