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

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

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

Dramatic river bend surrounds a natural red-rocked pedestal.

A natural history wunderkammer in the middle of the desert.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.

The largest land animal skull ever discovered.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

2300-year-old Roman road connecting the empire.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

Very likely the only museum in the world that celebrates the glory of the humble banjo.

These massive mitts are made of 30 tons of devotional bronze.

The future of roadside attractions is this sci-fi soda mecca that is home to a 66-foot tall neon pop bottle.

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

Most-visited and most-photographed slot canyon in the American Southwest.

A church of bones, decorated with 40,000 human skeletons.

A nearly abandoned Jewish settlement perched atop a hill in the heart of Yemen.