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

The oldest continuously occupied public building in the United States.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

While comics are the main attraction at this megastore, the second floor plays host to an exhibit fit for a museum.

This 28-foot-tall milk can contains one of the most whimsical ice cream parlors in town.

Curios, scientific antiques, oddities for sale.

A downtown park built on top of unclaimed graves.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

The site of America's first commercial oil well essentially disappeared after the town went bust.

Where the oil industry began.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

The atmospheric road was never meant to be so creepy.

Northern Ireland's Brobdingnagian stepping stones.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

A giant sculpture of the legendary "Salmon of Knowledge" celebrates the return of fish to Belfast's River Lagan.

A series of stained glass artworks that depict images of the hit TV show.

One of Ireland's most infamous prisons for rebels including men, women and children.

The modern birthplace of Irish freedom.

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.