The final resting place of the Hollywood star who came to a tragic end.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

Of course the grave of JFK's assassin is surrounded by conspiracy theories.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

The secret city built by the Manhattan Project.

The center of the only hemisphere that awards visitors with a commemorative coin.

Secret US military film studio in the Hollywood Hills.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

The clock that sets them all.

Oddly touching memorial to a little-remembered nuclear tragedy.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

Last remaining nuclear missile base in Ukraine.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

What is the Thing?

America's only nuclear missile silo open to the public.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A stealthy Apache hideaway that became the haunting site of a mass grave.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

The laboratory where the Soviet secret police invented exotic poisons used to kill dissidents in hideous and (mostly) untraceable ways.