Ever wanted the laymen's version of your credit card fine print?

The origins of midtown Manhattan's anachronistic wooden farmhouse remain a mystery.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

One of the last full-orchestra recording studios in New York City and an acoustical marvel.

A hidden "place of interment for gentlemen."

The former hotel where Tesla invented the radio.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

New York City's smallest piece of private property.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A tiny plaque marks the location of the water source that facilitated the birth of modern-day Boston.

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

Beautiful steampunk ghosts of early Massachusetts.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!