Erected in 113 to immortalize the very successful Emperor Trajan. The carvings, all 600 feet long wind up the 125 foot hollow column, tell the story of the conquest and capture of the gold rich Romanian based Dacian people. On top is a statue of St Peter ( added in 1588 after the gold covered one of Trajan was lost). Hard to get up to closely with traffic bustling around it. Originally the column stood between two tall libraries (one Greek, one Latin) so you could see the engravings from their upper stories. Now, go to the Museum of Roman history, or to London's Victoria and Albert Museum to study the plaster replicas up close.