Stromboli is a small volcanic island in the Tyrrhenian Sea, just off the north coast of Sicily. Referred to by some as the "Lighthouse of the Mediterranean," Stromboli is in a constant state of mild volcanic activity, so don't venture out on a hike without an experienced guide.

Patmos, a gem in the Aegean Sea, is steeped in history and spirituality, offering a serene escape for travelers seeking both tranquility and rich cultural experiences. Known as the "Island of the Apocalypse," Patmos is famously where Saint John the Theologian wrote the Book of Revelation. Visitors can explore the sacred Cave of the Apocalypse, a UNESCO World Heritage Site, where the saint is said to have received his visions.

Mont-Saint-Michel rises from tidal flats along the Normandy coast, its abbey and village shaped by centuries of pilgrimage, defense, and isolation.

From the Caribbean Sea on one side to the Pacific Ocean on the other, Central America is home to lush rainforests, volcanic peaks, and vibrant coastal towns.

Delhi is a sprawling metropolis in North India that contains the country's capital, New Delhi. Life is abuzz and hectic here, with traffic going every which way. A huge population shuffles through Delhi's streets, alleys and food and spice-selling bazaars, and it's quite memorable to be a part of it all.