These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

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

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

Resting place of Hollywood's immortals is also site of summer film screenings.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

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

An antiquated German apothecary on Chicago's North Side.

This historic hotel invented the chocolate brownie.

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

The residents of this ominous-sounding street in Pennsylvania liked its name so much they fought to keep it.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

This giant disembodied horse head seems to balance impossibly on its nose.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

A daily replay of the experiment that proved the rotation of the Earth.

This elaborate towering structure was once famed for its revolutionary height.

A historic covered bridge is but one example of an oddly prevalent American urban legend.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

A failed piece of Orientalism has become the proud symbol of a community.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

The world’s first penitentiary, meant to be humane, drove men insane.