A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

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

An intricately carved Viking church overlooks a glistening fjord.

A stunning silver lining to global warming's gloomy cloud.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

Walk 2,300 feet above the ground on the "Troll's Tongue."

A serpentine highway twists and turns over the treacherous Norwegian Sea.

Obelisks and stone pineapples in the Irish countryside.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

Northern Ireland's Brobdingnagian stepping stones.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

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

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

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

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

The stunning interior of this Gothic church is covered in ornate gold details.

Built by King Norodom to honor his late father.

A battle between nature and architecture in the Cambodian jungle.

This giant Buddha statue has 125,000 smaller Buddhas hidden inside it.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an 8th-century Buddhist master.