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.

A vast stretch of Australia’s southern coast known for towering limestone cliffs, remote scenery and seasonal southern right whale sightings.

New Haven, city in New Haven County, southern Connecticut, a port on Long Island Sound, at the mouth of the Quinnipiac River. It is known as an educational center and is the seat of Yale University (1701), Albertus Magnus College (1925), and Southern Connecticut State College (1893); the University of New Haven (1920) is in nearby West Haven.

Perito Moreno Glacier is one of the most recognizable ice formations in Argentina, located within Los Glaciares National Park in Santa Cruz Province. The glacier extends into the southern arm of Lago Argentino and is notable for its broad ice front, which can be viewed from a network of walkways and observation platforms. Its proximity to El Calafate makes it one of the more accessible major glaciers in Patagonia.

Mexico City sits on the high plateau of central Mexico, layered with more than seven centuries of history and culture. Built atop the ruins of the Aztec capital Tenochtitlán, the city reflects a continuous dialogue between Indigenous foundations, Spanish colonial influence, and modern urban life.