7. Walks of Turkey in Istanbul

It pays to go with a true authority when navigating Istanbul’s legendary Grand Bazaar. Walks of Turkey will also give you special access to the rooftop, with a view over the marketplace. No matter where you want to go in Istanbul — Hagia Sophia, the Blue Mosque — this company promises you the ability to have up-close experiences on small-group outings. Another highlight not to miss: a cruise of the Bosphorus.