Nuremberg is Bavaria’s second-largest city and for centuries was the undeclared capital of the Holy Roman Empire. There is plenty to do and see, starting with picturesque charm of the Old Town, situated at the foot of the Kaiserburg.

Exploring the Amazon Jungle in Brazil is like venturing into the heart of a living, breathing world. The Amazon Rainforest, often referred to as the "lungs of the Earth," is a lush, sprawling expanse that teems with extraordinary biodiversity.

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.

Rothenburg ob der Tauber rises above the Tauber River in Bavaria, where its medieval town center has stood largely unchanged for centuries, making it one of Germany’s most vivid windows into the past. This old walled city stretches along cobblestone streets where half-timbered houses, ancient towers, and narrow alleys invite visitors to wander and imagine life in the Middle Ages.

Key Largo, the northernmost of the Florida Keys, is renowned for its pristine natural beauty and vibrant marine life. As part of the Florida Keys archipelago, Key Largo is a gateway to the spectacular underwater world of the John Pennekamp Coral Reef State Park, the first underwater park in the U.S. Here, visitors can explore vibrant coral reefs through snorkeling and scuba diving, or take a glass-bottom boat tour to marvel at the colorful marine ecosystems without getting wet.