A 50-foot tile mural mosaic for the 100-year anniversary of the Statue of Liberty.

This brightly made over hotel hides decades of suicide, serial killers, and mysterious deaths.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

These subterranean models show Mexico City's central square during three different eras.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

This 16th-century close preserves an unusual piece of Edinburgh's transportation history.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

The 20th-century chapel’s intricate woodwork includes amazing details, most notably angels playing bagpipes.

In the Valley of Morelos lies a mysterious Olmec site with signs of jaguar veneration.

If it wasn’t for an innovative use of quilts during a crisis, the city of Panguitch might not exist today.

The enigmatic skull gazes out over the ruins of a once-great Mayan city.

After becoming locally extinct, this esteemed avian now flies free in the forests around the ancient ruins.

The ruins of an ancient pyramid built by the mysterious Chupícuaro civilization.

The largest collection of artifacts from the Olmec civilization, the mother culture of Mesoamerica.

A series of carved figures that scandalized British society.

An architectural oddity hides in plain sight on this iconic London bridge.

A sapling of the legendary tree where conquistador Hernán Cortés sat and wept after an Aztec uprising.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

Discarded animal sculptures stand forgotten by an abandoned aquarium and water park in Bosque de Chapultepec.

The gigantic skull of a long-extinct species that once roamed the forests of England and Ireland.

A gruesome and mysterious ancient sculpture of a pagan deity from the Roman occupation of Celtic Britain.

This magnificently macabre shield shows the power of chivalrous love in medieval times.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.