Tunis' white-washed, blue-shuttered buildings hide a treasure trove of Arabic and Ottoman art. Inspect illuminated manuscripts from the Koran, follow the twists and turns of the fascinating old Medina (inner city), marvel at the ornate Palace of Dar Ben Abduallah and the magnificent Djamaa-Ez-Zitouna Mosque, whose 184 columns were "recycled" from the rocky ruins of Carthage.

If you find yourself in Rotterdam, there's a strong chance you've arrived by water. This popular port city (the second largest in the Netherlands) has gone through an architectural renaissance since World War II, with daring, innovative structures dotting the city (cube houses!) and defining its skyline. Café culture is on the rise here, so grab yourself a table and a cup.

West Yellowstone, Montana sits right at the edge of one of the most visited protected landscapes in the United States, serving as a gateway to vast forests, geothermal fields, and wide open valleys. The town is built around travel into nearby wilderness, with simple log-style buildings, outdoor gear shops, and easy access points that lead directly toward major park entrances.

Namche Bazaar, perched at 3,440 meters in the Khumbu region of Nepal, is often called the gateway to Everest, but it’s far more than a rest stop on the way to Base Camp. Once a trading post between Tibetan and Nepali merchants, Namche has developed into a small mountain town where yak caravans and Wi-Fi cafes exist side by side. Despite its remote location, it has a Saturday market that continues to bring traders and trekkers together, just as it did centuries ago.

Sequoia National Park, located in California’s Sierra Nevada mountains, is a natural wonderland famous for its giant sequoia trees, including the world-renowned General Sherman Tree. Standing at an astonishing 275 feet tall, the General Sherman is the largest tree on Earth by volume and a must-see for visitors.