One woman's Viking Castle on Lake Tahoe.

The unbelievably opulent home built for an infamous newspaperman.

Quite simply the largest tree in the world (by volume).

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

A Seattle oddities shop brimming with Victorian-era gems and antique curio.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

New Orleans' famous cemetery, located on the site of a former race track.

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

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.

A sanctuary for wolves in a community which once trembled in fear of the murderous "Beast of Gévaudan."

These medieval ruins have survived since the 12th century, even providing shelter from the Nazis.

Since ancient times these picturesque springs have been providing bathers with healing waters.

The post-apocalyptic remnants of a bucolic town ruined by a plane crash.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

The famous winding walk at Chartres is surrounded in mystery and myth.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

Ancient paintings known as the "Sistine Chapel of Cave Art."

Science fiction's grandfather has a fittingly marvelous tomb.

One of the greatest maze designer’s greatest mazes.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.