Visit Hagia Sophia

Hagia Sophia stands as Istanbul’s most iconic landmark, drawing over 3.5 million visitors annually. This 1,500-year-old structure uniquely embodies both Byzantine and Ottoman heritage, serving first as a cathedral and then as a mosque. Its massive 31-meter dome, unsupported by columns for over 1,000 years, remains an engineering marvel. It outperforms #2's Grand Bazaar in cultural significance, offering a serene contrast to the bustling market's commerce.