"X" marks the spot of an echo chamber in the middle of a plaza.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

This quirky curiosity shop takes its cues from the world's bazaars.

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.

Tubing through a cave lit with glowworms is a magical underground experience.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

This New York holdover was built to provide housing for shopgirls and still does not allow men above the lobby.

The most confusing clock in New York.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

Elevated freight railway turned wildly successful urban park.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

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

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

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

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

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

Famously misunderstood wonder of the ancient world

The original Garfield station is the oldest station facility on the "L", with the station house dating from 1892.