St. George’s, the capital of Grenada, is a picturesque harbor town nestled within the rim of an extinct volcano. Its horseshoe-shaped Carenage, lined with pastel-colored colonial buildings, offers a postcard-perfect introduction to the island.

Trebinje, the southernmost city in Bosnia and Herzegovina, sits just a short drive from the Adriatic coast but offers a completely different rhythm. Framed by hills and set along the Trebišnjica River, the city has a history stretching back to Roman times. The river that winds through the city is one of the longest sinking rivers in the world and often disappears underground and resurfaces in various places.

Important both historically and economically, the beachside city of La Serena is one of Chile's oldest post-Columbian cities. The region's silver, copper and agriculture were so important that the city had its own mint. Today, La Serena maintains a colonial air, although it is threatening Viña del Mar's supremacy as premier beach resort. Apart from a string of beautiful beaches, attractions include a handful of museums and a number of nearby quaint villages and vineyards.

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.

Ceske Budejovice, the vibrant capital of the South Bohemian Region in the Czech Republic, is a city rich in history and culture. Its most famous landmark is the magnificent Black Tower, offering panoramic views of the city and the surrounding countryside. This 72-meter-tall Gothic tower, completed in the 16th century, is a prime example of the city's architectural heritage source.