Istanbul is a city built on layers of empire. Spanning two continents, it was once the capital of three major empires: Roman, Byzantine, and Ottoman. Visitors walking through the Sultanahmet district can witness this timeline firsthand, from the Roman-era Hippodrome to the Byzantine mosaics of Hagia Sophia, and the towering minarets of the Blue Mosque. At nearby Topkapi Palace, rooms still display the jeweled swords, ceremonial robes, and handwritten Qurans once used by Ottoman sultans.

Alberobello in southern Italy’s Puglia region captures the imagination with its distinctive trulli houses. These structures were built using a dry-stone technique passed down over centuries, without mortar or cement, and their unique form comes from layer upon layer of limestone nestled from nearby fields. Alberobello’s trulli are so remarkable that in 1996 the historic center was inscribed as a UNESCO World Heritage Site, where more than 1,600 of these buildings still stand.

Saratoga Springs, New York, has long drawn visitors with its bubbling mineral springs, historic charm, and a calendar full of events that give the town a lively edge. Known as “The Spa City,” Saratoga first gained fame in the 19th century for its naturally carbonated waters, believed to have healing properties. Downtown Saratoga Springs is known for its walkable streets, filled with locally owned boutiques, cafés, and bookstores.

This city is the last stop on one of the busiest artificial waterways in the world, the Kiel Canal. It is an important base for the German Navy and famous for its international sailing event, the "Kieler Woche", an annual sailing event that attracts millions of people around the world.

Among the stunningly snow-capped Swiss Alps, Zermatt is a charming ski resort town in Switzerland. Situated near the iconic Matterhorn peak, Zermat is the perfect destination for skiing, snowboarding, and hiking.