
Challenges
Travel Quiz: How Well Do You Know America’s Natural Wonders?
Rivers that spent millions of years carving a single canyon. Trees that have stood for thousands of years. Can you find them on a map?

Rivers that spent millions of years carving a single canyon. Trees that have stood for thousands of years. Can you find them on a map?

A staircase leading nowhere, a door opening into thin air, and 160 rooms built without a blueprint — what the legend leaves out.

The Arctic’s Largest Nomadic Migration: 620 Miles at -58°F

It is one of the most hostile places on the planet, and for that very reason, millions of flamingos come here to breed.

Lost cities, undisturbed tombs, and legendary artifacts: test yourself on the discoveries that changed history.

Ruins, deserts, and a souk that smells of history: a journey along Oman’s ancient frankincense route.