In Arizona, eight monuments and three parks typically charge admission fees, so those are the best places to begin if you’re all about saving money during free park days. We’ve marked them ...

Two Italian scientists claim to have discovered 38,000-year-old structures buried deep beneath the pyramids. But there's a ...

At Water Wheel Falls in Payson, Arizona, you'll find a series of swimming holes to cool off on a hot day.

That question lies at the heart of one of the most enduring geological enigmas of our time: the Yonaguni monument, an underwater structure off the coast of Japan that has sparked decades of debate.

The Great Pyramid—the oldest, largest and most famous of the monuments—is the last of the ancient world's "seven wonders" still standing. Built 4,500 years ago as a tomb for the fourth dynasty ...

The Navajo lived in an area today known as the Four Corners, where Utah, Arizona, Colorado and New Mexico meet. They called Monument Valley Tsé Bii Ndzisgaii, or “Clearing Among the Rock ...

Our planet now faces a global extinction crisis never witnessed by humankind. Scientists predict that more than 1 million species are on track for extinction in the coming decades. But there’s still ...

U.S. News Insider Tip: Springtime is a particularly colorful season to visit the Desert Botanical Garden. Visitors who arrive mid-February through mid-June will see an abundance of blooming ...

U.S. News Insider Tip: For a fun "vintage Vegas" experience, head to the second floor of the D Las Vegas Casino to play the Sigma Derby mechanical horse betting game. It's more than 30 years old ...