Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

Explore 10 acres of environmental sculptures.

A meditative space out of a fantasy story.

The quirky salon doubles as a retro museum run by the world's leading "hairstorian."

An old California photo stand has been turned into a shrine to the cozy art of crochet.

The fading, forgotten remains of a once bright and booming factory.

This unusually shaped mountaintop tower looks like a UFO floating over the city.

This tree was extinct for a thousand years before sprouting again from a 2,000-year-old seed.

The nearly 120-year-old piece of pork wears a brass collar and was once a man's "pet ham."

Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

Immortal combat in a Moscow museum.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

Museum celebrating the achievements of the Soviet space program.

A century-old cabin off of Highway 30 touts an unusual construction material: dinosaur bones.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

The first American department store, and home to the largest operating musical instrument in the world.

In the early 1800s, surgery was also a show.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

Dr Barnes' $25 billion private collection of art and arboretum.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.