This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

A sharp sculpture made of thousands of pieces of jagged glass.

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.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

A unique sculpture park that specializes in the huge and bizarre.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

Surrounded by industrial sprawl, a small monument marks the site of William Penn's first landing in Pennsylvania.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

The oldest surviving botanic garden in the United States.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

Yo, Adrian!

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

The world’s first penitentiary, meant to be humane, drove men insane.

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

Dr Barnes' $25 billion private collection of art and arboretum.

A layered tribute to the work of mosaicist Isaiah Zagar.

Alexander Hamilton’s creation caused quite a bit of controversy.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

An Irish Memorial commemorating those who perished due to potato blight.

Step into a pastel time capsule where candy is truly dandy.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.