An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Elevated freight railway turned wildly successful urban park.

This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.

After the musical legend's death, his memorial was mysteriously graffitied in gold.

One of two giant blue cockerel statues erected with an intentional double meaning.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

The only arched bridge made of stone on the entire Mississippi River.

Secret hideaway for an alternative beach experience.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

This clifftop arch is a natural stunner.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

2300-year-old Roman road connecting the empire.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

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

Rome's semi-secret peephole vista is also a former Crusader stronghold.

Alexander Hamilton’s creation caused quite a bit of controversy.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

A bronze monument to Cleveland's favorite, fastest son.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.