From waterfalls to unusual formations, Pennsylvania offers natural wonders that feel almost unreal once you experience them ...

Every year at Grand Canyon National Park, millions of visitors from all over the world stop at one of a dozen water spigots. Most people are on a rim, seeing the canyon's majesty for the first time, ...

A giant underwater canyon system in the Atlantic appears to have formed through tectonic forces rather than erosion.

It stands to reason that the best National Parks in the U.S. would also be the most popular, at least in most respects, and ...

Ariel Pinkney told Newsweek: "I kept talking about it for the rest of the day because I couldn’t wrap my head around it." ...

A canyon hike in Illinois that feels way bigger than it should. Rugged trails, dramatic rock walls, and real adventure ...

Discover the most dog-friendly national parks in the U.S., plus tips on hiking, rules for leashed pets, and how to explore ...

The tallest known cliff in the solar system isn’t on Earth — it’s on Uranus’ moon Miranda. Called Verona Rupes, this colossal wall of rock is so high it makes the Grand Canyon look small, and a fall ...

Wildlife enthusiasts will find plenty to love in Spearfish Canyon. The area is home to white-tailed deer, mountain goats, ...

The King's Trough Complex is a several-hundred-kilometer-long, canyon-like system of trenches on the North Atlantic seafloor.

Some national parks have a way of stopping you in your tracks. They’re the kind of place where you forget to reach for your ...

Do you think you can name all the famous people from Arizona? From Emma Stone to César Chávez, here's a list of 25 Arizonans ...