Now a Greek chapel sits on the spot where the holy spring or ayazma of Blachernae flowed in pre-Christian times. Its waters are believed to posses miraculous powers, but having drank it I feel much the same. In 451 a great church was built over the spring by Pulcheria, wife to Emperor Marcian. A few years later the robe and mantle of the Virgin were kept here. As a result it became the most important shrine in the city. The church was destroyed in 1434 by fire.

On the picture: The ‘Theotokos Blachernitissa’ icon and the 19th century reconstruction of the ‘Hagion Lousma’ (sacred bath).
The first church at the site of the sacred spring was commissioned by the Augusta Pulcheria between 450-453 (the year of her death) and her husband, the Emperor Marcian (450-457). The church was completed and embellished further by the Emperor Leo I (457-474), who added the Hagiasma (fountain of holy water) and the Hagion Lousma (sacred bath). Leo I also built the parecclesion of the Hagia Soros to house the holy mantle and robe of the Virgin that had been brought from Palestine to Constantinople in 473. It was then that the church was endowed with large estates.
Correspondent: J.M.Criel, Antwerpen.
Sources: Internetsite of the Ecumenical Patriarchate of Constantinople