Freiburg was founded by the Dukes of Zähringen in 1120, and the layout of streets and squares of the rapidly prospering metropolis is still impressively reflected in today's cityscape.

Yala National Park sprawls across Sri Lanka’s southeast, where dry plains meet lagoons and the Indian Ocean’s shoreline. It is one of the country’s oldest protected areas, first set aside as a wildlife reserve in 1900 and later declared a national park in 1938, and today invites travelers to see life thrive in a wide range of landscapes, from scrubland to sandy beaches.

Located in the Gulf of Honduras, this area of the Mayan offers jungle tours along the Rio San Carlos or walking through the Mayan ruina at Quirigua. In ancient Mayan culture, priests used to drive sting ray spines through their tongues to appease their gods.

A shallow lake at over 3200 feet above sea level in central west Kenya, it is the home of the Kamasya and Njamus who raise cattle and crops and fish for tilapia. The lake covers about 50 square miles.

Serbia is a country where centuries-old monasteries sit just a short drive from lively cities, and where the past is never far from daily life. In Belgrade, the capital, Kalemegdan Fortress offers panoramic views where the Danube meets the Sava River. This fortress has witnessed more than 100 battles and been rebuilt many times over two millennia. Within its walls are Roman ruins, an open-air military museum, and quiet park paths perfect for wandering between centuries of layered history.