The 28-foot granite map plots the locations of 40 theaters in New York City.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

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

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

Behind a modern brick exterior lies the oldest continuously-operating lunch-car diner in the United States.

Wisconsin's most celebrated export gets the royal treatment on I-94.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

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

This private residence was the template for one of the most beloved television homes of all time.

Tiki luxury on Nob Hill.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The programmatic glory of LA's giant whiskey barrel building has become an upscale reminder of the city's kitschy roadside past.

The exterior of this home was used for the hit television show, The Brady Bunch.

The historic building has preserved human organs, unusual hexagrams, and scars from a political assassination.

This 18th-century former mosque held the first Hellenic Parliament.

This slumbering beast honors the Bavarian soldiers who died in Greece during a 19th-century typhoid outbreak.

This legendary city has been a tourist attraction for centuries.

Step inside an ancient beehive tomb built for a mysterious cult hero.

The secular incarnation of a religious meditation.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.