Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

An artist's cute bronze subway sculptures belie his violent artistic past.

Frank Lloyd Wright built this suburban synagogue late in life, but it stands among his most iconic masterpieces.

A glittering Thai Buddhist temple in suburban Pennsylvania.

This giant disembodied horse head seems to balance impossibly on its nose.

This tiny structure was built by the creator of the Brooklyn Bridge.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

Temporary Burning Man sculpture made of two 18-wheelers.

This unassuming retro burger joint was billed as “diner of the future” at the 1939 World's Fair.

A simple plaque remembers an act of WWI terrorism that obliterated an island and forever scarred the Statue of Liberty.

A playground inspired by differential calculus dangles from the ceiling of the Liberty Science Center.

A bronze monument to the infamous radio broadcast in the real New Jersey town where the fictional Martians crash-landed.

One of the world's largest model railroads is a mind-boggling achievement.

The graffiti-covered ruins of an abandoned trading post in the middle of Navajo Nation.

Religious statues built because of one man's bargain with God fill this peaceful sculpture garden.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

A geological mystery on Camelback Mountain.

A mysterious "wedding cake" castle in the middle of the urban desert.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

A motel dedicated to Southwestern nostalgia.

A spiritual vortex among the red rocks in Sedona.

See massive fossils that are over 200 million years old in northeastern Arizona.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.