Lake Toba is another of the island's spectacular sights - a remarkable volcanic crater set in the middle of northern Sumatra, 176km from Medan. The lake is huge (the largest in South-East Asia), occupying the caldera of a giant volcano that collapsed on itself after a massive eruption some 100,000 years ago.

Chicago, Illinois, is a vibrant metropolis that combines architectural marvels, rich cultural offerings, and dynamic neighborhoods. Known as the "Windy City," Chicago is home to some of the most iconic landmarks in the United States. The Millennium Park, with its striking Cloud Gate sculpture, popularly known as "The Bean," is a must-see for visitors.

Denver, Colorado, known as the “Mile High City” for its elevation exactly 5,280 feet above sea level, offers far more than a mountain backdrop. It’s a city where old saloons, Victorian homes, and vintage brick warehouses sit beside sleek skyscrapers and buzzing food halls. While the nearby Rocky Mountains are visible from almost anywhere in the city, places like City Park and Washington Park offer wide green spaces right in town.

Todgha Gorge is a dramatic limestone canyon in Morocco’s eastern High Atlas Mountains, close to the oasis town of Tinghir. The Todgha River has cut a deep passage through the mountains, leaving towering rock walls that rise to around 300 meters in places. At its narrowest, the gorge contracts to roughly 10 meters across, creating a striking corridor of stone and sky.

Nestled within the Colorado Rockies, Keystone is a popular ski resort destination west of Denver. The perfect spot for a variety of outdoor adventures, Keystone offers ample opportunity to ski, snowboard, hike, or golf.