Vienna has a long memory. Once the capital of the Habsburg Empire, the city still carries signs of its imperial past in its palaces, concert halls, and wide boulevards. Visitors can walk through the Hofburg complex, where emperors once ruled, or tour the opulent rooms of Schönbrunn Palace, which features 1,441 rooms and a maze in its gardens. But Vienna’s many historic buildings now house contemporary art museums, cafés, and institutions that reflect the city’s modern identity.

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.

Just south of Kyoto, Osaka is one of Japan’s largest cities and a cultural hub known for its spectacular culinary scene. Highlights of this sprawling and lively city include majestic Osaka Castle, whose tiers of white and green tower over Nishinomaru Garden’s blooming pink cherry trees, as well as the Shitennoji Buddhist temple, Osaka Aquarium Kaiyukan, and ever-popular Universal Studios Japan.

Nestled on the banks of the Danube River, Vidin, Bulgaria, is a city where history and scenic beauty converge. This ancient city, known for its well-preserved medieval fortress, the Baba Vida Castle, offers a unique glimpse into Bulgaria's past. The fortress, dating back to the 10th century, stands as one of the best-preserved medieval fortifications in the country.

Montenegro, set along the Adriatic Sea, draws travelers with its dramatic landscapes and layered history. The Bay of Kotor, often mistaken for a fjord, is actually a submerged river canyon surrounded by steep cliffs and medieval towns. Kotor itself, a UNESCO World Heritage site, is enclosed by ancient fortifications that visitors can climb for panoramic views stretching from terracotta rooftops to the sea.