Istanbul: Sultanahmet - Hagia Sophia

After the conquest of Constantinople in 1453, this design influenced the basic plan of the greatest, most splendid Ottoman Turkish mosques.

Stroll into Hagia Sophia's shady garden and you feel only that you are approaching an improbable, famous, old, ungainly pile of Byzantine masonry, huge and squat, guarded by four dissimilar and incongruous minarets.
Its harmonious original form is now dissonant with extra buttresses at north and south