Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

The largest known Ancient Egyptian obelisk.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

This unassuming tree stump reportedly traces its roots to the famous pharaoh queen's reign.

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

A concrete arrow from a 1920s network of airmail beacons is still preserved at the western edge of suburban Reno.

This sculpture of a rhinoceros suspended above a city square is meant to evoke the weight of the human condition.

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

Improbably, the largest wildlife refuge in the conterminous 48 states sits just northwest of Las Vegas, Nevada.

The wild west is still alive and well at this authentic mining town watering hole.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

An enormous illuminated figure dances on the Las Vegas strip.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

An exotic wildlife habitat right off The Strip.

A blacklight mini-golf fever dream pays tribute to the iconic rock band.

Temporary Burning Man sculpture made of two 18-wheelers.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.