7. Turkey (27 million visitors)
Istanbul is the only city in the world which lies in two continents. Try some delicious Turkish coffee in the small and cozy cafes of Istanbul, or visit places like the Grotto of St. Peter in Antakya (Antioch), where Saint Peter the Apostle preached to a congregation. With gorgeous beaches, places of the ancient world and a great food culture, Turkey is well-known for its welcome to tourists.