The capital city of the Dominican Republic is rich in history and beauty, boasting 16th-century Spanish architecture and the oldest cathedral in the Americas. The narrow streets of the old colonial city are a testament to the complex mixture of forces that contributed to the construction of the first European city in the Western Hemisphere.

The commercial and cultural center for the Ruhr region on the Rhine River, Duseldorff is also the site of the Felderhof Cave where Neanderthal man was found in 1856.

In the heart of Oman lies Nizwa, a city once considered the country’s capital and a hub of learning and trade. Its iconic round fort, built in the 17th century, remains one of Oman’s most visited landmarks.

Ontario is Canada's most densely populated province, harboring such cosmopolitan cities as Toronto and Ottawa. Millions of tourists come into Ontario every year, and industry and farming are the chief industries along the Great Lakes.

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.