Hagia Sophia

Historic · SultanahmetIstanbul,Türkiye

A domed hall of 537, the largest enclosed space on Earth for a thousand years, where Byzantine gold mosaic and Ottoman calligraphy share one room.

Hagia Sophia is a domed hall in the old city that has been a cathedral, a mosque, a museum and a mosque again. Since 2024 visitors go up a separate route to the vast upper gallery, while the floor below is kept for worship. From the parapet the interior opens all at once: gold-ground Byzantine mosaics on one side, giant Ottoman calligraphy roundels ringing the base of the dome. The dome spans about 31 metres, and from up here you stand almost level with the foot of it. The hall you are looking into opened in 537, and for close to a thousand years nothing larger was enclosed anywhere on Earth. The whole sequence is still readable on the walls: gold ground uncovered, plastered over, uncovered again, and some panels shut behind curtains during prayer. The famous wishing column, worn hollow by centuries of thumbs, stands in the north-west corner of the floor below — inside the prayer hall, and off the visitor route since 2024. On the ramp up, look down: the marble is worn into soft waves by fifteen centuries of feet going to the same place.

Worth knowing

Good to know

Come at opening or in the last hour — the tourist entrance and the upper gallery are emptiest then, and the low evening sun lights up the gold mosaics.
Visit between the prayer times — during the five daily prayers the ground-floor figural mosaics, including the Virgin at the far end, are curtained off; in the hours between they stand uncovered.
The floor below is not yours — since 2024 visitors go straight up to the gallery, so the nave, its porphyry floor and the Omphalion can only be read from the parapet.
Dress for a working mosque — shoulders and knees covered, hair covered for women on the gallery route, and scarves are lent at the door; entry also pauses around midday on Friday for the main prayer.

Things to do

1
Work the parapet from end to end
Work along the parapet instead of stopping at one spot: down to the right of the nave's centre lies the Omphalion, a ring of coloured marble discs where Byzantine emperors were crowned. Across the nave, in the half-dome over the old altar, glows the ninth-century Virgin and Child, the first great figure set here after the icon-smashing years. Both are far off; a small zoom or a pair of binoculars pulls them close.
2
Look down at the floor, not over the rail
In the middle bay of the south gallery a marble slab in the floor reads HENRICUS DANDOLO, the Venetian doge who led the Fourth Crusade that sacked this city in 1204 and died here the following year. The slab is not his tomb: it was laid during the 1849 restoration, and the medieval grave vanished long before that. Most people walk straight over it on their way to the mosaics.
3
Climb the empress's ramp
The way up to the gallery is a broad cobbled ramp, laid at so gentle an angle that the empress could be carried up it in a litter instead of climbing stairs. Take it slowly, and at the top the interior drops away all at once — chandeliers at your feet, calligraphy roundels at eye level, the dome overhead. The building's best photographs are taken from here.