This giant expressionist head crowns a museum devoted to a beloved Mexican leader.

Abandoned figurines adorn a small plot on the side of a craft market's entrance.

You can release a young butterfly at this beautiful indoor garden.

A barbarous band of serpents guard the bases of these Aztec temples.

The famous artist couple lived and worked here, in two different houses separated by a bridge.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

Part bookstore, part café, and part forest.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

Frida Kahlo's childhood home, now a museum of her life and works.

Was there a small "backpack nuke" hidden in the attic? JFK apparently thought so.

A surprising, but overlooked example of geology in the middle of the nation’s capital.

The discovery site of the "Capitalsaurus," the official dinosaur of Washington, D.C.

The first presidential bomb shelter was located in an old vault under the Treasury, connected to the White House via tunnel.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

People escaping slavery may have hidden inside a corpse vault.

A wondrous old library overlooking the nation's capital.

A brass plaque dedicated to a convicted cannibal hangs in the National Press Club, and that's not even the craziest part of the story.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

The oldest standing structure in downtown San Diego.

The tiniest tiki room in San Diego.

The house's confection-like decorations are the result of one man's painstaking work over decades.

This collection of neon icons is preserving Arizona's history, one sign at a time.

One of the world's largest telescopes, stares into the night sky with two huge mirrors.