A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Oldest surviving example of a Dutch saltbox frame house in America.

The eroded core of an ancient volcano is now accessible by a short hike.

This historic national park is covered in the stunning ruins of red rock pueblos.

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

This rusted car found in Petrified Forest National Park's Route 66 exhibit may be the most photographed abandoned car in the country.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

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

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

Ancient pueblos built into the base of a natural canyon wall.

Although now a decaying ruin, this stone cabin's history includes several notable figures.

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

This oversized flute-playing Ancestral Puebloan deity is also a landmark of Southwestern kitsch.

The graveyard holds the remains of Irish immigrants who arrived in Queens after fleeing the Great Famine.

This neo-Gothic former auto showroom is one of the few remaining reminders of Brooklyn's "Automobile Row."

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

A beautiful but toxic fountain of mercury.

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

Designed by Gustave Eiffel before his famed tower.

The ballpark in "Pigtown" where the Brooklyn Dodgers made their name was replaced with a huge apartment complex.

This recently uncovered ad for Lindsay's run at Mayor in 1965 had been hiding for decades underneath a billboard.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

This 19th-century clock has been restored to help withstand the harsh environment of its seaside home.