The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

A dangling church built over a Colombian gorge.

Hundreds of antiquated typewriters and office machinery show the technological evolution of business.

A fiery crater has been burning in the Karakum Desert since 1971.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This controversial museum includes such detested exhibits as a chocolate suicide bomber and fecal-smelling digestion machine.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

The world's first commercial spaceport is a disappointment of cosmic proportions.

One extremely determined man's homemade universe.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

The sign at the garden gate reads: "These Plants Can Kill."

This massive underground salt mine now holds a sci-fi theme park in its depths.

Cold storage for agricultural biodiversity.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

Home to items never before seen by the public.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

This shop for all your super spy needs hides an educational secret.

Its buzzing collection honors vibrator history.

The only surviving prototype for Buckminster Fuller's house of the future.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.