Trip Doctor: Istanbul's Best Walking Tours
Culinary Backstreets–Istanbul Eats: Go off the beaten path to under-the-radar restaurants, bakeries, and candy shops. From $125.
Sea Song: Itineraries from Sea Song, which has custom tours in 17 Turkish destinations, are crafted around themes—food; archaeology; sacred places; artisan traditions—and include unique experiences such as lunch at a historic Ottoman house. From $150.