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.

The site of the climactic scene from the classic horror film is now a historic landmark.

A beautiful 62-acre Catholic shrine and botanical garden.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

A trash dump made beautiful by nature's power.

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.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Mysterious rocks that ring musically when struck.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

A museum dedicated to the history and exploration of both popular music and science fiction.

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

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

A one-of-a-kind collection of a unique medium.

A 16th-century horror show built in a lovely Italian garden.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Continuing the tradition of the dime museum in style.

The sign at the garden gate reads: "These Plants Can Kill."

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

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

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

Stroll through a wonderland of stupendous moss-covered trees.

A semi-scholarly approach to sex.

This massive library holds what was once the largest book collection in the world.