The seawater playground of gilded-era San Francisco burned to the ground in 1966.

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

The world's last remaining store of its kind.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Faceless white figures loom over the city from the rooftop.

The oldest living tree in Manhattan comes shrouded in sinister legend.

New York City's smallest piece of private property.

Elevated freight railway turned wildly successful urban park.

A once celebrated industrial wonder now lurks in a quiet corner of Flathead Lake.

The remnants of an abandoned, 19th-century gold mill along Aruba's rugged northeastern coast.

A safe place for the wild donkeys of a hot vacation destination.

Every Sunday, Bogotá turns 75 miles of its city streets into a bicycle superhighway.

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.

This tiny shop has been serving traditional tamales for more than 200 years.

This beloved marketplace mascot poops money and grants good luck.

Where else would a linchpin of post-colonial Native American cuisine anchor the menu but a museum?

A museum dedicated to the history and exploration of both popular music and science fiction.

Belly up to the bar in Cowtown, don't forget to buy some boots.

The world's second-longest burning light bulb.

Every equinox this Maya pyramid puts on a spooky ancient light show.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

The flock of plastic poultry is an ode to the classic comedy staple.