A Looff creation in Santa Monica best described as “a California-Byzantine-Moorish-style fantasy.”

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

This sweet Southern elixir comes from what may be the oldest grape vine in North America.

Something's missing between the arcades of the Palazzo della Ragione in "the city of the three withouts."

A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

A memorial to the Potawatomi chief who allegedly ran nearly 150 miles to alert settlers of an impending attack.

Manhattan and the Bronx have been playing tug-of-war over this former island neighborhood for more than a century.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

A popular winter vacation destination for migrating monarch butterflies.

This stunning sea creature-shaped home blends into the landscape like a fantasy villa.

"Not too many people can say they've had a nuclear bomb dropped on them, not too many would want to." — Walter Gregg.

Climb down into the largest sinkhole in Qatar.