Augsburg was founded in 15 BC under the rule of the Roman emperor Augustus. For 400 years the city was the seat of a provincial government of the Roman empire. Its ideal location made it a crossroad of all important routes to the south. An advantage from which the powerful merchants and bankers, the Fugger family and the seafaring Welsers, likewise profited. They elevated Augsburg to rank among the world's most powerful cities. Kings and emperors were frequent guests here.

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. Originating from the Peruvian Andes, the Amazon travels through nine countries before emptying into the Atlantic Ocean.

Even though Linköping has developed into an industrial center and is Sweden's fifth-largest city, it maintains a small-town atmosphere. Old Linköping is the restored town center with preserved buildings from the 18th and 19th centuries. The tower of the impressive Linköping Cathedral, which took nearly 300 years to complete, can be seen from a distance of more than 10 kilometers.

Bulgaria is a republic in southeastern Europe. The capital and largest city is Sofiya. Bulgarian culture has been influenced successively by Byzantine, Greek, Russian, and Western cultures.

Saratoga Springs, New York, has long drawn visitors with its bubbling mineral springs, historic charm, and a calendar full of events that give the town a lively edge. Known as “The Spa City,” Saratoga first gained fame in the 19th century for its naturally carbonated waters, believed to have healing properties. Downtown Saratoga Springs is known for its walkable streets, filled with locally owned boutiques, cafés, and bookstores.