Seven miles outside of historic Athens, the Greek coastal city of Piraeus lies upon the sparkling waters of the Aegean Sea and is the largest passenger port in Europe, servicing nearly 20 million passengers per year.

Jellyfish Lake is a shadowed oasis hidden among the mushroom-like Rock Islands of Palau. This forest‑fringed saltwater lake invites visitors to float with millions of gentle, stingless jellyfish that glow like drifting amber clouds under emerald light. The lake formed about 12,000 years ago, when rising seas flooded an ancient reef basin that was gradually cut off from the ocean. Over centuries, its jellyfish evolved in isolation, shedding their stings and multiplying without predators in sight.

Saint Augustine, Florida, is a charming tapestry of history and coastal beauty. As the oldest continuously inhabited European-established settlement in the continental United States, this historic city offers a fascinating glimpse into early American life. Founded by Spanish explorers in 1565, Saint Augustine boasts an array of colonial architecture and historic landmarks.

Three hours north of Auckland, a chain of verdant islands meet glittering turquoise waters in the Bay of Islands. This subtropical paradise will astound you with its abundance of natural beauty and marine life. Sail to the Bay of Islands, and you'll find plenty to see and explore. Hike to stunning Rainbow Falls, kayak along the shores of New Zealand's lush coastline, and keep an eye out for whales, dolphins, penguins, and a variety of colorful parrots.

Luxembourg, a small yet influential country in the heart of Europe, offers visitors a rich blend of historic sites and contemporary culture. The capital city, Luxembourg City, is famous for its dramatic cliffs and ancient fortifications that have earned it a UNESCO World Heritage status. Walking through the old quarters, visitors can explore the casemates that reveal layers of the city’s military past.