The traditional turkish hats

The Walled Obelisk of Emperor Constantine Porphyrogennetos

There are 8 of these round calligraphic panes in Hagia Sophia

There are 8 wooden circular panes in Hagia Sophia

There's no reason to walk around in dirty sandals in Istanbul

This colorful drink vendor does a busy trade

This group of circular marble slabs is the Omphalion. The large central slab is where the coronation of Byzantine emperors took place.

Tour buses park at the Hippodrome

View from the Loge of the Empress

View of Hagia Sophia

View of Hagia Sophia

View of Hagia Sophia

View of Hagia Sophia ground floor, taken from the gallery

View of the Hagia Sophia mihrab

View of the Sultan's Loge inside Hagia Sophia