Here is a picture of St. Peter's Basilica from the Via della Conciliazione, showing the obelisk from 13th century Egypt which once stood in Nero's circus. The oblisk is 40 meters high, and was placed here on order of Pope Sixtus V in 1585.
From Martha Bakerjian, About.com
Vatican Picture: Basilica of St. Peter
Picture © 2006 by James Martin - Europe for Visitors, licensed to About.Vatican City Travel EssentialsVatican City and Rome Tour ReviewVisiting the Vatican Museum
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