A fantastical and futuristic temple of light built from nine monumental glass veils.

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

What was once thought to be a wellspring of unicorn bones is actually just a prehistoric burial site.

The silly symbol for an underground protest group is now scattered around the city.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

This lovely university observatory continues to sit abandoned since its potential savior was sent to jail for fraud.

This mysterious petroglyph evokes the ancient swastika symbol but was later vandalized with the more troublesome Nazi one.

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

The bodies of some early polar pioneers are still buried beneath the harsh snows of the Antarctic.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

This ancient Hawaiian henge may have been an early star chart.

A formerly opulent Italian village is now a crumbling ghost town that no one really knows what to do with.

The field of tiny caves that mark this Chinese cliffside are each their own historic Buddhist temple.

An expansive and intricately restored mansion remains from over a century ago--and so do its ghosts.

Hidden deep in the Guatemalan jungle is a turquoise paradise of natural pools, caves, and waterfalls.

Shocking dioramas of human torture, meant to promote human rights awareness.

Mysterious "dots" seen from a satellite in southeast Peru.

Where hills of dirt conceal the burial ground of one of the most powerful ancient Native American societies.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

Hidden in the back of a disused small town hotel is a dive bar shellacked with over a million pennies.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."