With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

After covering almost 1.5 billion acres, the survey's still not finished.

The site of Neil Armstrong's first flight is marked by a full on replica of the moon landers.

There is beauty and history in the ruins of this former company town.

A collection of miniature, symbolic sculptures hides in plain sight across Kyiv.

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

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

This 140-year-old beacon off the Florida Keys marks the wreck of a Navy ship that once roamed the Caribbean hunting pirates.

The largest freshwater lake in the Florida Keys.

A nude beach alongside a washed-out road.

Neglected resting place of some of the city's early luminaries—and a woman encased in concrete.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

An underwater city for the dead.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

A self-built castle made by a mysterious man.