This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

A dilapidated dock tells the story of Titanic's missed arrival.

Where manatees are the snowbird vacationers in these balmy Florida springs.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

A museum befitting the city responsible for supplying the majority of the world's LSD.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

A beautiful geyser under environmental threat.

A prohibition-style speakeasy takes up residence in the last Victorian residence in Hollywood.

Rainbow-hued local gem in Venice.

A hands-on traveling collection of the innovative devices of yesteryear.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

This abandoned amusement park was built on a site with a dark history.

The first declared National Monument in the United States.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

An emporium for the weird, creepy, rare, and just plain gross.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

The site of the climactic scene from the classic horror film is now a historic landmark.

Mysterious rocks that ring musically when struck.