The first custom-designed building to showcase the works of Dale Chihuly is a wonderland of glass and light.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

A cave in southern Italy adorned with thousand-year-old Biblical frescoes existed in obscurity until fairly recently.

A hidden barn-sized rendition of Grant Wood's most famous, and most parodied, painting.

This Gothic church was wheeled in its entirety to a new location a half a mile away.

A fairytale-like medieval church perched atop a rocky cliff on Italy's "Coast of the Gods."

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

A once-luxurious, now abandoned hotel in the Italian Alps.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

Bloodstains can still be seen in this medieval church where two medics saved lives on D-Day.

An unrecognized nation-state created in the 1820s to avoid taxes.