Yerebatan Sarnici (cistern)
The entrance of Yerebatan cistern, also called Basilica Cistern, is located at the corner Divan Yolu and Yerebatan Caddeli. The subterranean water reservoir is just across the street when leaving Hagia Sophia. The cistern reaches from Yerebatan Caddeli to even Alemdar Caddeli, which is a 100m wide maze of twelve column rows; each row consisting of 28 pillars.
To underline the atmosphere mystic music is played while the colonnades are illuminated and appear against a red background. To visit the cistern you have to pay another 10 Lira.
The low light situation is difficult to catch; high ISO and fast lenses are a must if good results are wanted.