Column of Constantine (Çemberlitaş)

The Column of Constantine was erected in 330 AD by Constantine the Great to mark the official dedication of Constantinople as the new capital of the Roman Empire, and it originally stood at the center of the Forum of Constantine, an oval public square along the city's main ceremonial avenue, the Mese. Built from drums of dark red porphyry stone, a material associated with imperial authority since porphyry was quarried almost exclusively in Egypt and reserved for imperial commissions, the column originally rose over 50 meters when topped by a bronze statue of Constantine depicted as the sun god Apollo/Helios, a statue that fell during a storm in 1106 and was replaced by a cross under a later emperor. Ancient sources report that relics, including fragments said to be from the True Cross and other Christian objects, were sealed within the column's base as part of its consecration, reflecting Constantine's promotion of Christianity as the empire's favored religion. The column suffered repeated damage from fires, most severely in 1779, and earthquakes over its 1,700-year history, and Byzantine and later Ottoman authorities reinforced its cracked porphyry drums with iron hoops or bands, giving the monument its Turkish name, Cemberlitas, meaning 'Hooped Stone.' Today the column stands isolated on a traffic island along Yenicariler Street, stripped of its original statue, capital, and much of its base decoration, and it is presented purely as an outdoor monument with a small explanatory plaque rather than as part of any museum or excavated site, making it one of the oldest Byzantine structures still standing in its original location in the city.