In the walled city of Siena we stand firmly planted in the Middle Ages. Siena preserved its original character more markedly than any other city in Italy.

This 2,000-year-old city, where the Teutonic Order founded one of its first commanderies in the 13th century, lies on the convergence of the Moselle and Rhine Rivers.

Las Vegas, Nevada, is an electrifying city where glitz and glamour meet entertainment and excitement. Known as "The Entertainment Capital of the World," Las Vegas offers an unparalleled array of attractions, from its iconic casinos and luxurious hotels to its world-class dining and live shows. The city's entertainment scene is second to none, featuring legendary headliners, cutting-edge performances, and an array of themed attractions.

Yucatán, a Mexican state, is popular for its Gulf of Mexico beach areas and spectacular Mayan ruins. It is bordered by the states of Campeche and Quintana Roo.

Isabella Island is the largest of the Galapagos islands, on the western end of the archipelago. Shaped like a seahorse when viewed from above, Isabella is home to more wild tortoises than any other island, as well as a wide variety of other animal, bird and marine life.