Step into the golden ages of the Ottoman, Byzantine and Roman empires with a full-day, private walking tour through Istanbul’s Old City. See the monuments and historic sites of Hippodrome Square, where Roman charioteers raced in ancient times, then explore St. Sophia's stunning architecture and museum. See the iconic tiles, mosaics and slender minarets of the Blue Mosque and browse traditional handicrafts inside the Grand Bazaar. Learn about the lives of sultans and courtiers at Topkapi Palace, which contains a remarkable collection of Turkey's greatest holy relics, imperial treasures and artwork.