Sniff the Titan Arum's rotting flesh.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Tucked away amidst some of the most famous addresses in the world is New York’s only fraction of a street.

A very classy 1920s-era bar right in Grand Central Station.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

A celebration of capitalism in Midtown.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A hands-on traveling collection of the innovative devices of yesteryear.

A hip bar decorated with walls of golden skulls.

Try not to get slimed in Tribeca.

Tucked in the back of this amazing antique store is an important piece of medical history.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A terrific purveyor of natural history objects and curios.

The very first subway station in New York City is beautiful, decked out in chandeliers, and ... abandoned?

A classic advertising icon immortalized in regal bronze.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.