Discover some of Istanbul’s top attractions on a full-day walking tour in the old city of Sultahnahmet. Visit the opulent Topkapi Palace — one of the main palaces for the Ottoman sultans, then take in the magnificent Hagia Sophia, where Byzantine and Ottoman rulers worshipped. Continue to another gem, the Blue Mosque, then walk around the Hippodrome and the Grand Bazaar, learning about the history of each site from your informative guide. Your small-group tour includes lunch and is limited to eight people for a more personalized experience.