A quick and simple solution to Cambodia's train woes.

At 207 feet, one of the world's longest continuous escalators.

One extremely determined man's homemade universe.

This platform is now a memorial dedicated to those who were deported during the Holocaust.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

The former home of the oldest nail maker in the United States was built on the ashes of a mill burned by the British.

One of several Lilliputian portals that are ready to transport passengers to other dimensions, if they can find them.

It took years to decode its mysterious messages.

An abandoned 19th century quarry in the middle of the woods, remade by unnamed wanderers into a massive series of rock thrones.

Dentist's hated concrete colossi are now beloved icons of the community.

A park full of outsider art, created by college students studying outsider art.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

One of the oldest amusement rides in existence was a huge disappointment to its creator.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The quarry was abandoned over 100 years ago, after a massive ammunition explosion ended in tragedy.

This bridge once allowed Dere Street to cross the River Tees.

California's first suspension bridge.

The skeletal frame of a decommissioned gas-pumping station offers breathtaking views of greater Berlin.

A massive Montreal stadium that has seen nothing but trouble since its inception.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

Walk over a 150 year old manhole.

These ornate manhole covers were used for a now-forgotten purpose.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.