A modest museum in the final home of Italian poet and father of modern Italian, Francesco Petrarca.

Rock-cut caves and 7,000 Buddhist sculptures carved into the nearly sheer face of a sandstone mountain.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

Myanmar's Mount Olympus atop a 2,500-foot volcanic plug.

Mount Nyiragongo has erupted at least 34 times since 1882 and is home to the world's largest lava lake.

Picturesque ruins once held off mighty armies.

Former estate of Lenin, now home to his death mask.

An entertainment center in a huge transparent tent.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

Naturally formed rock city in Poland.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

The mountaintop inspiration for Umberto Eco's "The Name of the Rose."

The legendary building that needed ghostly approval before being built.

An odd little fishing town that is inundated by tourists looking to be locked up in a cage and surrounded by great white sharks, because why not?

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

This impressive tunnel was dug entirely by hand over the course of 36 years.

Astronomical observatory above Lake Titicaca.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

This ancient village and its adjoining cemetery have a beautiful history of death and remembrance.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

Ancient rock-hewn town that witnessed key events of Georgian history.

The remains of a sunken military ship wreck visible through clear water.

The New England cabin where an infamous British occultist conducted experiments in "magick".