Santa Maria del Fiore Cathedral, - the fourth biggest church in the world with its large dome of 42 meters in diameter by famous Renaissance architect and engineer Filippo Brunelleschi / Piazza del Duomo, Florence, Italy.
If you get a chance to visit Istanbul city dont forget to go and see those reflective stones. People named this as The Stone Mirror. In this picture the way the stone mirror reflected that building really amazes me. Definitely want to get there one day!