Whether you're thinking about a hike up a mountain or just seeing it from a distance, these are the best mountains and ...

March is the perfect time to enjoy Arizona hikes that keep the mileage low while serving up seriously impressive scenery.

Adventure vacation activities in America to test your fitness (and bravery) - These adventures take place in some of America’s most remarkable environments, so they’ll boost your physique and come wit ...

Deep inside Petty Johns Cave, explorers moved through narrow tunnels where water filled large sections of the passage. Heavy rain had flooded much of the cave system, turning long corridors into dark ...

On a recent evening, a sign on the sidewalk enticed with “New Bar Flg.” Red hues poured out of the building’s five windows onto the street. Inside, the red continued in the bar with paint and lights ...

Shrouded from astronomers’ view by dense clouds, Earth’s “sister planet” Venus is slowly giving up some of its secrets. A lava tube beneath the Venusian surface — the first ever detected — could help ...