These two monoliths have stood at the entrance to the neighborhood since the days it was called "Hollywoodland."

L.A.'s oldest operating bowling alley is a beautifully restored homage to its speakeasy days.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

This peaceful garden is hidden on the grounds of a spiritual organization founded by a pioneer yogi.

This symbol of peace is appropriately positioned overlooking the Pacific Ocean.

A master of deception, Harry Houdini's greatest trick may have been living in two places at once.

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

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

This curious fresh and salt water lake holds a secret that draws in deep divers from around the world.

It is believed that the historic tower is sinking at a rate of an inch a year, though no one is completely sure why.

Khmer Rouge's high security prison.

Originally a meeting place for foreign correspondents and war reporters, the FCC remains an atmospheric spot for sunset drinks in Phnom Penh.

One of the biggest markets in Asia, under one of the continent's largest domes.

5,000 skulls in memorial to those killed by the Khmer Rouge.

Tiny memorials honor individual victims of the Holocaust.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

The most visited, and possibly most controversial, museum in Germany.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

A hidden three-foot-wide house separates these two regal churches.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.