Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

The first declared National Monument in the United States.

This shop for all your super spy needs hides an educational secret.

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.

Mysterious rocks that ring musically when struck.

A trash dump made beautiful by nature's power.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The seamy, underground secrets of Portland's criminal past.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

Stroll through a wonderland of stupendous moss-covered trees.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Enormous lake at the bottom of a unique cave system.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

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

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Medicinal spa created with the discharge from a geothermal energy plant.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

A walk through the historic city center, under the streets of Seattle.

Elevated freight railway turned wildly successful urban park.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.