The highlights of Istanbul for a first-time visitor are:
The Hagia Sophia is a 6th-century Christian basilica, converted to a mosque by the Ottomans. After 85 years as a museum, Hagia Sophia became a working mosque again in 2020. If the word awesome still had meaning, I would use it to describe the Hagia Sophia, temple of Holy Wisdom. It set the standard for Byzantine architecture, though it was 1,000 years before another cathedral surpassed its size. From the outside, it’s a red-orange mountain that seems to anchor the city to the Bosphorus shore. It’s not particularly beautiful but the air of greatness can’t be missed. On the inside, it’s vast and filled with the light of heaven. The massive, superlative dome practically floats above the wide-open enormity below. Interior surfaces are decorated with frescos, mosaics, calligraphy and marble.