The collection includes seven one-of-a-kind automobiles, vintage fashion, and more.

This outdoor gallery of sculptures along the East River was once a landfill.

This 1,700-pound edible sculpture is way better than your average chocolate mousse.

Explore the dark underground corridors of this graffiti-covered former military fortification.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The history of the tea trade is told in bas-relief on this historic pair of Boston doors.

Narrowest house in Boston.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

The world's largest piece of copyrighted artwork.

This statue intended for children to enjoy became a minor political spat.

A beacon atop a downtown building provides Bostonians with weather forecasts and baseball news.

Millions of numbers carved in glass represent the tattoos forced upon victims.

These World War I shooting range tunnels are now haunted halls of underground graffiti accessed through the roots of a tree.

Considered by many to be one of the most dangerous highways in Alaska.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

The abandoned grounds and derelict greenhouses of this once-magnificent Edwardian estate are now a nature preserve open for exploration.

Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

A brutalist gem towering over the heart of Milan.

This sculpture forces visitors to confront their relationship with space.

A large replica of a monumental Roman inscription is located on the side of this museum.

A perfect circle of 24 mysterious holes dates back to prehistoric times.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Once called Winthrop Park in 1889, home to a decidedly sexy tribute to the Monitor vs. Merrimac battle.