Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

This rock formation named for its unique shape is one of many that call the Alabama Hills home.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

The world's oldest surviving music hall was also once a freakshow.

An expansive book store, art gallery, and curio shop with wares ranging from tarot cards to novelty socks.

World War II-era Nazi compound nestled in the Santa Monica hills.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

This astronomical clock is the second oldest in England.

The unusual patterns in this rock formation result from two distinct modes of weathering.

A tunnel with windows, so you don't miss out on the impressive views.

This giant temperature attraction created some giant electric bills.

A cobblestone alley with an interesting past.

Come crisp December nights, this fairly plain neighborhood becomes a holiday dream world.

"Looks so real, it's scary!"

Dozens of lights dangle from the branches of what may be the brightest tree in Los Angeles.

Gift shop offering toe tags and chalk body beach towels tucked into a coroner's office.

Hidden in one of the skyscrapers on Bunker Hill, this museum features an 1895 stagecoach and peers into California’s gold-lined history.

Though the original building has been demolished, these massive bronze doors were saved.

A few iconic structures are all that remain of America’s first outdoor shopping mall.

A Cold War site complete with rusty structures, hiking trails, and beautiful views.