Pretoria is a vision of purple, thanks to its plethora of blossoming trees that gave the South African metropolis its nickname: Jacaranda City. Give in to the animal magnetism of the National Zoological Gardens of South Africa, then get up close and personal with the big, bad kitties of the Cheetah Research and Breeding Centre. The buildings of Pretoria reflect diverse architectural styles and influences, creating a unique urban landscape.

Maybe your local zoo has lions, leopards, zebras or elephants. Maybe they even have wildebeest. But we bet they don't have 1.3 million wildebeest—never mind 1.3 million wildebeest in migration, with predators in hot pursuit. It's one of the most awesome sights in nature, and you can see it at Masai Mara in southwestern Kenya.

The majestic Austrian Alps stretch across the country, an awe-striking area of Ice Age valleys, verdant heaths and alluvial cones within Europe's largest national park, 700-square-mile Hohe Tauern. Taking in the dramatic cities of Salzburg and Innsbruck and the beautiful province of Tirol, home to spectacular skiing and hiking, as well as Gross Glockner, Austria's highest peak, and some of the world's best winter and summer sports playgrounds, the Austrian Alps are an outdoor lover's paradise.