Avatoru, Rangiroa, French Polynesia
One of the largest coral atolls on earth with a total circumference of 200 km, Rangiroa is a part of the island group called the Tuamotus. Its central lagoon is so large that is actually has its own horizon. Pearl cultivation is practiced here, yielding the prized black pearls, and surprisingly, it also supports a winemaking endeavor for the commercial market in Tahiti. The vines are planted on the small motus right alongside coconut palms.