Countless grotesque faces stare out from this eerie Prague art wall.

There's something big lurking beneath the surface of this tiny Oregon park.

Only known mainland rookery of the threatened Stellar sea lion.

On the Oregon coast there is a natural hole that seems to be draining the sea.

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

The eerie remnants of an ancient forest were hidden under the sand for centuries.

This little slice of the Netherlands in the Pacific Northwest blooms in a rainbow of color each spring.

A heavenly experience, right here on Terra Firma.

Hollowed out cedar log tubs set in an ancient towering forest.

This massive mushroom has spent centuries eating its way across a huge swath of Oregon.

Unknown to many, this sparkling turquoise lake hides amid Oregon's snowcapped mountains.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

1920's mining camp and environmental education center is serving to protect the surrounding forest, one of the last of its kind in the Pacific Northwest.

This frequently-photographed waterfall takes only a short hike to visit.

This park contains one of the largest concentrations of cedar glades, a unique and rare ecosystem.

The oldest residential street in Europe also features an optical illusion.

A monument to the thousands of Canadian soldiers who died capturing the French ridge during World War I.

A typographic tribute to the many comedic greats who make Great Britain laugh.

This former lifeboat house now used by a funeral service was the site of a 19th-century boating tragedy.

The development of this cliffside waterpark is representative of Mexico's history of co-op tourism developments.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

The gigantic skull of a long-extinct species that once roamed the forests of England and Ireland.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Once one of the largest rooms full of books in the world, this bookstore basement is still a treat for bibliophiles.