Long before Europeans arrived, Native Americans built an artificial island out of shells that has withstood a millennia of hurricanes.

After an Illinois church was struck by lightning and burned down, Frank Lloyd Wright designed this replacement.

You might recognize this historic Oregon mansion from its appearance in 'The Goonies.'

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

A historic pub with traditional Irish cuisine, fine drinks, and a paranormal past.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

In a quiet north Chicago neighborhood rests a stunning relic of the golden age of earthenware design.

A goddess-topped water fountain in Chicago was created thanks to the dreams of a thirsty newsboy.

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

A river with some unusual, and occasionally dangerous, habits.

The face of a woman pushes its way through the earth.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

Years of archaeology, just chillin' by the water cooler.

All of Chicago's wood-paved streets are long gone but two alleys remain.