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.

The Amazon River, winding through the heart of South America, is a marvel of nature that offers unparalleled adventure in one of the most biodiverse regions on Earth.

El Salvador, small and densely populated, is a republic in northeastern Central America. San Salvador is the capital and largest city. El Salvador consists of a central plateau with river valleys and is situated between two volcanic mountain ranges that run east to west. High, rugged mountains are found in the extreme northwest.

Sri Lanka is an island republic in the Indian Ocean off the southeastern coast of India. Sri Lanka is separated from India by the Palk Strait and Gulf of Mannar. The capital of Sri Lanka is Sri Jayavardhanapura (Kotte); and Colombo is the largest city. Sri Lanka's coast is indented by lagoons and inlets.

Lisbon, the enchanting capital of Portugal, entices sightseers with its vibrant color, stunning Gothic architecture, and temperate weather. Easily traversed by foot or tram, the city’s distinct quarters and vivid cultural landmarks make Lisbon an excellent spot for exploration.