The Column of Marcian is a Roman honorific column erected in Constantinople by the praefectus urbi Tatianus and dedicated to the Emperor Marcian. It is located in the present-day Fatih district of Istanbul. The column is not documented in any late Roman or Byzantine source and its history has to be inferred from its location, style and dedicatory inscription.
The column is carved from red-grey Egyptian granite, in two sections. The quadrilateral basis is encased by four slabs of white marble. Three faces are decorated with IX monograms within medallions, and the fourth with two genii supporting a globe. The column is topped by a Corinthian capital, decorated with aquilae.
Wikipedia https://en.wikipedia.org/wiki/Column_of_Marcian
Address 2A Kızanlık Caddesi, Fatih 34080, Turkey
Coordinates 41°0'55.588" N 28°57'1.025" E