Trajan's Column, a column erected by Trajan in the Forum at Rome in memory of his victory over the Dacians, and sculptured with the story of his exploits, is 125 ft. in height, and ascended by 185 steps; was surmounted by a statue of Trajan, for which Pope Sextus V. substituted one of St. Peter.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Trajan, Marcus Ulpius * Transcaucasia