Kairouan is a historic city in central Tunisia, set on a broad plain away from the Mediterranean coast. It is one of the principal holy cities of the Islamic world and is recognized for its exceptionally preserved medina, religious monuments, and traditional urban design. The city’s whitewashed buildings, domes, narrow lanes, and surrounding walls create a distinctive landscape.

Culture, dining and nightlife are just a few of the reasons to find yourself in sunny Brisbane. This sprawling, constantly-evolving river city is for the young and the young at heart. Shop at the outdoor markets, where you'll find fashion, crafts and produce. Beaches are the order of the day here, too, with North Stradbroke Island and Moreton Island attracting hordes of sunbathers.

As you cruise along the Orinoco, South America's second-longest river, you will pass an imposing 17th-century fort. Just up the river is Ciudad Guayana, your gateway to Angel Falls. The falls, discovered 60 years ago by American bush pilot Jimmy Angel, are the hightest in the world. More than a half-mile hight and 15 times taller than Niagara Falls, they are undoubtedly one of the world's most breathtaking natural wonders.

Uluru-Kata Tjuta National Park, national park in the Northern Territory, Australia, in the arid center of the continent, southwest of Alice Springs. The area was established as Ayers Rock/Mount Olga National Park in 1958 and renamed Uluru National Park in 1977.

Known as the "Garden Island," Kauai is Hawaii's oldest island and a tropical paradise. Covered with verdant rainforests, glittering waterfalls, and immense cliffs, Kauai will astound you at every turn. This island is the perfect destination for outdoor adventures, with activities from kayaking, to ziplining, to snorkeling. Better yet, marvel at the island's natural beauty, from the scenic cliffsides of Nāpali Coast State Wilderness Park to the resort beaches of Poipu.