A favorite for many cruise-goers and tourists, Ketchikan, Alaska, is a charming city located near the state’s southeastern edge.

Madeira, an archipelago off the coast of Portugal, is often referred to as the “Island of Eternal Spring” due to its mild climate and lush landscapes. Funchal, its vibrant capital, is a perfect blend of natural beauty and rich history. Visitors can explore the cobblestone streets of the old town, marvel at the Gothic-style Sé Cathedral, and stroll through the colorful Mercado dos Lavradores, where local farmers sell fresh produce, exotic flowers, and the island’s famous wine.

Vieques Island is found in the northeastern Caribbean, roughly 8 miles east of the Puerto Rican mainland. Its beaches are commonly acknowledged as some of the Caribbean's best. The Bioluminescent Bay is especially alluring given the undeveloped nature of the island.

Angkor Thom was the last great capital of the Khmer Empire, established in the late 12th century under King Jayavarman VII in what is now northwestern Cambodia. Enclosed by massive stone walls and a wide moat, the city was designed as both a political center and a sacred landscape, symbolizing the cosmic order of the Khmer worldview.

This 2,000-year-old city, where the Teutonic Order founded one of its first commanderies in the 13th century, lies on the convergence of the Moselle and Rhine Rivers. Hop on a cable car, one of the city's most popular attractions, for stunning city-wide views, or cruise down the Rhine to spot some of Koblenz's magnificent fortresses and castles, including the Ehrenbreitstein Fortress and Schloss Stolzenfels.