This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

The unusual patterns in this rock formation result from two distinct modes of weathering.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

Local lore holds that Butch Cassidy took an escape route through Red Canyon's sandstone hoodoos after an attempted murder.

The fifth-longest natural arch in the world, and the longest outside China.

This quiet park's strange sedimentary spires were named after Kodak's color film.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This tiny museum's sizable collection is jammed into a former underground public toilet.

An easy to overlook storefront hides some of the most authentic and regionally diverse Chinese food in New York.

A surreal museum of extraordinary industrial objects.

Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Don't blink or you'll miss it.

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

Lie in a hammock where George Washington stood.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.