World's largest collection of serial killer artwork and other macabre exhibits.

The White House Situation Room was taken apart in 2006 and shipped to the Ronald Reagan Presidential Library.

California's largest steel arch bridge.

Explore more than 130,000 new and used books in the "world's largest outdoor bookstore."

A unique local art exhibit that has continued to grow since 1989.

The beautiful behemoth is one of the largest trees of its kind in the United States.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

A miniature city, once ruled by the Queen of the Netherlands.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Tiny memorials honor individual victims of the Holocaust.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

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

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

At one of Berlin’s oldest churches, visitors can place mosaic tiles to help restore a medieval mural.

A statue honoring 44 continuous years of greeting passing ships.

More than a century after her death, Little Gracie Watson remains one of Savannah's most often-visited residents.

This haunting tombstone comes complete with a heartbreaking story of love and loss.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

Hidden amid the old-world charm of Savannah is a museum dedicated to the world of oddities and criminal history.

This quirky curiosity shop takes its cues from the world's bazaars.