Located in Australia's Northern Territory, Uluru is an iconic sandstone formation and UNESCO World Heritage site. This red rock monolith, believed to be over 500 million years old, has been considered sacred by Australia's indigenous peoples for thousands of years and is one of the country's most well-known natural landmarks. This spiritual destination will astound you at sunrise and sunset, when the warm sunlight turns Uluru to deep hues of red and orange.

Tahiti is a veritable paradise in the South Pacific. The largest and most populous island of French Polynesia's Society Islands, Tahiti is known for its iconic overwater bungalows, crystal-clear cerulean water, and lush, tropical rainforests.

On the Nile's east bank sits Luxor, a onetime stronghold for Egyptian pharaohs. Key sites include Luxor Temple, Karnak Temple, and the Valley of the Kings.

To visit Barcelona is to embrace both the past and the future. There is much to do and see in this cosmopolitan capital of Catalonia, from medieval structures to beaches to UNESCO Heritage Sites by Antoni Gaudí and Lluís Doménech i Montaner.

Located on the Rhône River, Avignon is the city to which the Popes fled when leaving the corruption of Rome in the 14th century. The palace they built, 'Le Palais des Papes,' is a breathtaking must see.