Built on a narrow, rocky ridge, Antananarivo occupies a strategic point at the center of the island of Madagascar. Two forts watch over the city from the east and southwest, while within the city limits lay royal palaces, embassies, some fifty churches and a mosque. The city's most distinguishing feature may be the burnt out remains of the Rova, or Queen's Palace, situated on a prominent hill. Its steep alleys and stairways make Antananarivo a challenging but rewarding city to explore on foot.

This former Bedouin fishing village is now a popular tourist destination—especially for serious windsurfers, who'll find some of the best conditions in the world off Dahab's beaches. Long known as a laid-back, backpacker-friendly town, Dahab is becoming more developed, yet retains a casual vibe. Finally, Dahab is also home to the Blue Hole, the world's most dangerous dive site. Only very experienced technical divers should attempt passage through "The Arch" here; if you're a novice diver, stay close to the surface. (Editor's note: Our list was compiled before political unrest prompted many countries to issue travel warnings for Egypt. If you're currently planning a trip to Egypt, please consider the risks and monitor your government's travel alerts.)