Architectural monsters are devouring this palace's every door and window.

An alchemist's “magic door” stands in the middle of a Roman park.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

An almost life-sized elephant named Ms. Ellie greets visitors at this jumbo-themed museum.

A daily replay of the experiment that proved the rotation of the Earth.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

Contrary to what one might expect, ice forms inside this small cavern during the summer and melts during the winter.

A local prank turned town icon.

This elaborate towering structure was once famed for its revolutionary height.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

Yo, Adrian!

The first American department store, and home to the largest operating musical instrument in the world.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

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

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

This prehistoric figurine is the oldest known realistic depiction of a human face.

The site of the first medieval crusade that pitted Christians against Christians.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

The largest crypt ever constructed in France was built in the 11th century on an ancient Druid sacred site.