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

A museum dedicated to exhibiting remarkable outsider art.

The celebrated eyesore created by starry-eyed sweethearts.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The blinking light atop the iconic landmark has been sending secret messages for decades.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

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

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The legendary building that needed ghostly approval before being built.

A giant open-air sculpture made of over 200 full-sized boats.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

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

The palatial McDonald's that inspired Wesley Willis.

The subtle science of a master molecular gastronomist.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

The first piece of public art dedicated to LGBT rights.

This translucent sculpture represents a quintessential component of New York City's skyline.

The one-time epicenter of American songwriting is now a little remembered Manhattan commercial block.

The most confusing clock in New York.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.