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

This castle constructed in 1928 was crafted from drawings of Lismore Castle in Ireland.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

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

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

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

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

Holding the most bodies of any cemetery in the United States.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

Final resting place of Typhoid Mary.

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

The highest natural point in New York City and all of the Atlantic coastal plain.

The unassuming structure was part of a Major League Baseball stadium.

The highest rapid transit station in the world.

Before online banking and smartphone apps, there was "commuter banking" in the subway in Downtown Brooklyn.

This unusual subway stop was originally a real estate office.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

On the hills of Bay Ridge stands a house straight out of a fairy tale.

New York's oldest concrete structure is being preserved thanks to the gentrification of Whole Foods.

The gilded vestiges of a sterling department store can still be found in a Brooklyn shopping center.

An abandoned subway tunnel that could have reinvigorated Staten Island still lies somewhere beneath this Brooklyn park.

A beautiful collection of architectural ornaments rescued from demolished New York City buildings.