Geodesic dome luxury retreat in the Scottish Highlands.

An architect's childhood fantasy treehouse made real.

A 15th-century house single-handedly disassembled then reassembled bit by bit 100 miles away.

Canyon walls shrouded in ferns.

Treehouse motel and treehouse-building school.

Where beer lovers can literally immerse themselves in beer.

A hotel and restaurant serving as the mecca of kitsch.

Sloth rehabilitation center in the jungle of Costa Rica.

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

The Magical World of George Phar Legler.

The fairy tale castle of the "fairy-tale king."

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A giant Troll lurks under one of Seattle's oldest bridges.

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

The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California."

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

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