Natural cathedral designed by Italian artist Giuliano Mauri.

Living trees form the structure of an open-air palace.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

A mechanized clock where a man fights off a dragon, crab, and rooster.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

The oldest stone house in Paris was built by its most famous alchemist.

France's national museum of scientific and industrial instruments.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

A massive sea stack famous for its appearance in The Goonies.

A fine, large-aperture telescope available for public use.

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

This bridge provides safe passage for squirrels.

An extraordinary mixture of natural beauty and man-made phenomena.

In Washington's Yakima Valley lies a town "where dinosaurs roam."

Remember that scene in the Matrix, when Neo is in the big white room with all the weapons flying by? Well, this is what it would look like if he had wanted trees instead of guns.

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

A trading post in the North Pole where children send letters.

This whimsical stacked cabin looks like something out of a children's book.

A heavenly experience, right here on Terra Firma.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

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