Two groundbreaking brothers from Pasadena.

The beautiful 1920 Pantages Theatre remains hidden just underneath the LA Downtown Jewelry Exchange.

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

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

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

Historic funicular railway, believed to be the shortest railroad in the world.

The legendary building that needed ghostly approval before being built.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

Gargoyle head that brings good luck.

Controversial site of what could be Europe's first pyramid.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

The place where World War I began.

These warring psychedelic crags commemorate an unsuccessful military operation.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

The tower was originally used as a chimney for the waste incinerator of St Johns Precinct and Market.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

Climb to the top of the world's largest seated bronze Buddha.

The strange behavior of a tween led to allegations of witchcraft and a curse being placed on anybody within earshot.

A beautifully eclectic mix of architectural styles.

A unique seaside cave where Aleister Crowley faked his own death.

The sign at the garden gate reads: “These Plants Can Kill.”

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".