Check out the three standout sights of Istanbul’s UNESCO-listed historical centre, Sultanahmet, on an engaging 4-hour tour. The small-group experience includes commentary about Istanbul’s past, as well as visits to the extraordinary Hagia Sophia and Blue Mosque, which is adorned with thousands of İznik tiles. Afterward, stroll around the ancient Hippodrome, and hear of the chariot races, social gatherings, riots and executions that took place during the city’s Roman, Byzantine and Ottoman days. Numbers are limited to 15 for a personalized experience.