Malta’s ornate and vibrant capital, Valletta, dazzles travelers with its abundance of historical landmarks and striking architecture. This island jewel off the coast of Italy remains a popular destination for Mediterranean cruises. From central St. George’s Square, to sixteenth-century Casa Rocca Piccola, to the Siege Bell War Memorial, Valletta has no shortage of monuments detailing the city’s long history.

Poros, a small island in the Saronic Gulf of Greece, is known for its pine-covered hills, neoclassical architecture, and laid-back charm. Just an hour by ferry from Athens, it feels worlds away from the bustle of the capital, offering a slower pace and picturesque scenery.

Mist, research stations, and penguins are just a few of the things that define the South Shetland Islands, an archipelago off the coast of Antarctica. These 11 Antarctic islands, most notably King George Island, have served as a base for researchers from Chile, Argentina, and a variety of other countries. The archipelago has also become a popular cruise destination for tourists to the Antarctic region.

Sofia, Bulgaria’s capital, is a city where the past meets the present in a symphony of ancient history, stunning architecture, and vibrant urban life. At the heart of Sofia lies the Alexander Nevsky Cathedral, one of the largest Eastern Orthodox cathedrals in the world. With its golden domes and elaborate frescoes, this architectural marvel serves as a symbol of Bulgarian identity and a must-see attraction.

La Paz is Bolivia’s administrative capital, a city that clings to the walls of a canyon, rising from 3,600 meters to over 4,000 meters above sea level. That dramatic geography means it holds the title of the highest capital city in the world. From the crowded streets of the valley floor to the windswept plateau of El Alto, La Paz is a city of striking contrasts.