A celebrity from the late Cretaceous period.

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

The most decorated dog of World War I is preserved in the Smithsonian.

The national park was once a plantation estate.

People escaping slavery may have hidden inside a corpse vault.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

The United States Capitol's former columns still stand.

Now abandoned, this East Austin school for the disabled began as the "State Colony for the Feeble-minded."

Some islands... they come, they go, especially on Lake Travis.

This eclectic, mosaic-clad home includes a bamboo ping-pong loft and a "Whispermaphones" intercom.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

A lone gunner's station is all that remains of a replica Spanish Fort in Florida.

One of the last of the great 1920s movie palaces is a Floridian Greco-Spanish-Persian dreamscape.

Home to a giant switchblade and one of the world's largest collections of pocket knives, this museum is a cut above the rest.

The humble home where the famous beat author lived briefly and wrote one of his most famous works.

A museum dedicated to the legacy of Bob Moog and his pioneering synthesizers.

The fine fabric handwoven at Biltmore Industries was once coveted around the world.

Step back in time on this preserved 1800s farm.

Mystery surrounds a famous marshal of Napoleon's army.