The Haghia Sophia
was built in the 6th century as a Christian church, but was converted to a mosque in 1453 when Islamic armies conquered the city, called Constantinople.
We didn't have to take off our shoes to enter the Haghia Sophia as it is now a museum, having been a church for almost 1000 years then a mosque until 1934.
At night, the domes and minarets of the Blue Mosque and Haghia Sophia are lit up and you'd be hard pushed to find a better, glittering sight in the whole of Turkey.
Historic monuments such as the Haghia Sophia
, once the seat of Byzantine power, and Topkapi Palace, from which Ottoman sultans ruled, were unscathed by Tuesday's powerful quake.
The King and Queen chose Haghia Sophia mosque-museum as a first destination and later will visit Istanbul's other popular historical places such as Blue Mosque (Sultanahmet Mosque) and Grand Bazr.
VAR of The King and Queen walking inside Haghia Sophia
Bydd e'n ymweld a mosg anferth o fwd yn Djenne, Mali (Gorllewin Affrica), mosg Jam a Masjid yn Dehli (India), Mosg Moslemaidd Haghia Sophia
yn Istanbwl (Twrci), Mosg Mawr Cordoba (Sbaen) a Mosg Efrog Newydd (UDA).
Saturday morning With only a weekend to explore, there are three must- see places - the Topkapi Palace, the Blue Mosque and Haghia Sophia.
Next we're off to the ancient Haghia Sophia - it used to be the world's fourth largest cathedral, but became a mosque during the Islamic conquest of Istanbul.
C* The marauding invaders who stripped the Haghia Sophia
Church of its gold and its jewels and its glorious icons were not the Ottoman Turks in 1453, but Latin crusaders some two-and-a-half centuries earlier.