Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

Where the polar bear watches over everything, and every drink is a double.

The drama of nature in full effect in this Nevada State Park.

This former lieutenant governor's home is brimming with curiosities.

This massive geographical sculpture is so subtle, it's possible to pass by it without noticing.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

A land of debatable treasure.

The most magnificent bottle house in a town strangely full of them.

Graffiti, cars, and religion combine to create this jungle of scrap in the Nevada desert.

An eccentric millionaire's personal curio collection includes at least one shrunken head.

The only surviving prototype of Buckminster Fuller's revolutionary car.

Its founder calls it a "proletariat art renaissance".

A library built during San Francisco's pioneer times is a student's retreat, bibliophile's sanctuary, and chess player's delight.

A popular tourist cave with a dark past.

A young botanist's horticultural vision realized through a lifetime of planting, tending, and collecting seeds.

A classically inspired temple in Redwood City.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

This crumbling stump is all that remains of what was once thought to be the oldest living organism.

A memorial to the unknown and unheralded men and women of the Cold War military and intelligence services.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Bonsai garden in Oakland is curated by the first non-Japanese female bonsai master in the United States.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.