South America, the fourth largest of the earth's seven continents (after Asia, Africa, and North America), occupying about 17,819,100 sq km (about 6,880,000 sq mi), or about 12 percent of the earth's land surface.

Nestled in the foothills of the Eastern Alps, Salzburg, Austria, exudes a timeless charm that combines Baroque splendor, musical heritage, and breathtaking natural beauty. The city is famously known as the birthplace of Wolfgang Amadeus Mozart, one of the world's greatest composers. Visitors can immerse themselves in the life and works of Mozart by visiting his birthplace, now a museum, on Getreidegasse, a picturesque street lined with wrought-iron signs and colorful facades.

Nestled in the heart of Greece's Thessaly region, Kalabaka is a charming town renowned for its striking natural and historical attractions. Most famous for its proximity to the Meteora rock formation, Kalabaka offers a unique blend of geological marvel and spiritual history.

A historic capital in the heart of the Balkans, Belgrade will absolutely charm you with its picturesque cafés, striking religious monuments, riveting museums, and thriving nightlife.

Evidence of our nation's birth abounds in Boston, a hub of revolution that is essentially the oldest city in the United States. Visitors are compelled to walk the 2.5-mile Freedom Trail around the city center, and bear witness to 16 historical locations related to the history of America.