The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

A technicolor place of worship for Elevationists.

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

Home to a protest movement, a bombing, and a dramatic change in labor history.

A display of magnificent stained glass windows is the first exhibit of its kind.

Pizza with a side of fine art.

Chicago's museum dedicated to the history of bondage and fetishism is more textbook than titillation.

Internationally known record store and purveyor of "dusties."

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

A century-old network of freight tunnels underneath the city's historic business district.

A lush green oasis in the middle of Chicago.

A Bibliophile's Dream.

A giant bronze coil of feces is both a tribute to doggie defecation and a reminder to pick it up.

A speakeasy takes on Chicago's drinking culture.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Wallabies live naturally on this Irish island.

Legend says this cave housed a 16th-century cannibal and his family of 48.

The modern birthplace of Irish freedom.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

Northern Ireland's Brobdingnagian stepping stones.