The Great Barrier Reef stretches along Australia’s northeast coast, forming the largest coral reef system on Earth and one of the planet’s most complex living ecosystems.

Jeju, often written as Cheju in older English sources, is South Korea’s largest island and lies in the Korea Strait south of the Korean Peninsula. The island is known for its volcanic landscapes, coastal cliffs, lava tubes, and the prominent peak of Hallasan, which rises at its center.

Columbus, city and seat of Muscogee County, western Georgia, a port at the head of the Chattahoochee River, opposite Phenix City, Alabama. Columbus is a regional transportation, trade, cultural, and manufacturing hub. Its many textile, food-processing, and metalworking industries are powered by hydroelectric plants on the Chattahoochee River.

Situated at the confluence of the rivers Merwede and Noord, Dordrecht is one of the Netherlands' oldest cities, rich in history and character from its charming medieval center and picturesque canals to its beautiful historic buildings. With its intricate network of canals and waterways, the city once played a key role in the Dutch Golden Age and is home to the Biesbosch National Park, one of the largest national parks in the Netherlands.

Flagstaff, Arizona, is a mountain town that perfectly blends the charm of a small community with the excitement of outdoor adventure and rich cultural experiences. Nestled at the base of the San Francisco Peaks, Flagstaff serves as a gateway to some of the Southwest's most iconic landscapes, including the Grand Canyon, which is just a short drive away.