Some of the most spectacular scenery is found on a trip to the San Juan Islands. No wonder. This 100-million-year-old mountain range turned archipelago, located a few miles northwest of Seattle, changes dramatically with the tide. There are 743 islands at low tide--and 428 at high tide.

Kinshasa, the capital of the Democratic Republic of the Congo, is one of Africa’s most vibrant and unpredictable cities. Sprawling along the banks of the Congo River, it’s the third-largest city on the continent and pulses with music, art, and personality at every turn. Across the river lies Brazzaville, making Kinshasa part of the only pair of national capitals facing each other across a single waterway.

One of the Caribbean's most lively islands, Guadeloupe will charm you with its impressive dormant volcano, stunning tropical forests, and French ambience. Actually composed of two islands, Grand Terre and Basse Terre, Guadeloupe has the honor of hosting one of France's seven Parcs National. Don't miss a chance to try Guadeloupe's famous Creole cuisine.

Sintra, located just 40 minutes from Lisbon, feels like a world apart. Tucked into the hills of the Serra de Sintra, this town has drawn kings, poets, and explorers for centuries. It was once the summer retreat of Portuguese royalty, who left behind palaces and gardens that seem pulled from a storybook. The most famous, Palácio da Pena, is perched high above the town with bold red and yellow towers that blend Romanticism with Moorish and Gothic styles.

Abuja is a planned, modern city and the proposed new federal capital of Nigeria. The site was chosen to replace the capital Lagos because of the central location, easy accessibility, good climate and land for further expansion.