The world's largest model of our planetary system.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

One woman's decades-long obsession with the "La Fée Verte."

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

This small primate research island is teeming with playing, fighting wild monkeys.

This Italian foot path winds through the mountains via 52 individual tunnels.

An island in the middle of a lake, in the middle of a volcano, in the middle of a bigger lake, in the middle of a bigger island, in an archipelago, in the Pacific Ocean.

This cave holds a surprisingly colorful variety of geological oddities.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

The stones that traveled from Spain to eventually become a holy place for San Francisco's nature worshippers.

Massive crater in central Oregon.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

The world's first ice hotel is still one of the most elaborate and beautiful.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

Nazca pilgrimage site covering 370 acres is a popular stop for archeologists and looters.

A valley of unique erosion patterns lends to a view like nothing on Earth.

Ancient pueblos built into the base of a natural canyon wall.

The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

Malaysian fireflies create a dazzling display as thousands light up in unison.

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

The Boston square dedicated to the dark poet who was born nearby.