This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

God's Saharan sandbox of wrath.

Mosaics, storks, and brothels—this ancient city has it all.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

Traditional 11th-century outdoor tannery.

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

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

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

Ozymandias’ time-keeping temple.

A mapping error in the 19th century made loggers think this section of the forest was underwater.

This statue of Olympic hockey coach Herb Brooks immortalizes one of the greatest moments in American sports history.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

The secret city built by the Manhattan Project.

Mile-long cave system near Great Smoky Mountains.

An experimental, automotive replica of Stonehenge.

An entire city block built completely out of petrified wood.

A fitting attraction for the corn capital of the world.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A true roadside icon standing on the same plains that the herds once roamed.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

A headstone tells the sad story of a lost little boy and his pet dog.

An extravagant western hotel where every floor is the "ground floor."