An unexpected Easter egg lurks in the background of a cherub wall relief at the Breakers mansion.

The idyllic colonial home of the artist behind the famous portraits of George Washington and Thomas Jefferson.

This historic Rhode Island mini-cemetery features a number of headstones run through with mysterious holes.

The second oldest Jewish graveyard in the U.S. is tiny, with connections to George Washington and Henry Wadsworth Longfellow.

The oldest still-operating tavern in the United States was once owned by a pirate.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

Resonating tubes make music from highway overpass.

Why have you never heard of the second most popular tourist site in New York?

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

Books you don’t need in a place you can’t find.

The world's largest rotating world.

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

Over fifty whirling pools left by the glacial age.

An enormous, inside-out glass globe built in 1935.