This abandoned horse racing track was an exercise in hubris from its inception.

A towering bronze statue memorializes the founding father of postwar American conservatism.

Concrete crosses scattered across the Arizona scrubland which were used to align spy satellites.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

The unusual burial monument of Arizona's first governor.

A geological mystery on Camelback Mountain.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

What is the Thing?

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

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

A spiritual vortex among the red rocks in Sedona.

A reproduction of earth's many biomes.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A 200-year-old building in the French Quarter that was to be Napoleon's home in the New World.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

A desperate final message left by a POW on the run serves as a memorial for himself and the 97 that died with him.

A remote coral island with a gristly history of shipwreck, battles, and a horrendous war crime.

An impressive museum dedicated to the resource that made the Scandinavian country rich.

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

Was there a small "backpack nuke" hidden in the attic? JFK apparently thought so.

A much-maligned monument to teetotalism.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.