A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

Elevated freight railway turned wildly successful urban park.

An artist's cute bronze subway sculptures belie his violent artistic past.

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Perhaps the most scandalous statue of America's first president.

Look closely and you’ll notice that the color changes a third of the way up the tower.

At 207 feet, one of the world's longest continuous escalators.

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

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

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

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

The first American department store, and home to the largest operating musical instrument in the world.

The world's largest piece of copyrighted artwork.

Bouncing, delightful, mechanical art at the MIT Museum.

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

Ice cream stand, snack bar, and time capsule of milk conveyance.

This parking garage was the site of what was - at the time - the largest cash robbery in history.

The site of Paul Revere's historic two lantern warning.

Narrowest house in Boston.

One of the indelible moments of the American Revolution took place at this location.

A bit of retro transportation flair preserved in the world's largest department store.

Wine bottle sculpture with a ship's stateroom inside.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.