A collection of artworks exclusively created by the mentally ill that was almost burned by Nazi culture police.

The jaw of one of humankind's earliest ancestors on display at an overlooked geology museum.

One of the only spherical 19th century gas containers left today.

This demonic monument commemorates a carving destroyed in World War II.

After years of being casually peed on by humans, this tree is peeing back.

This unique exhibit "Dialogue in the Dark" reverses roles as the visionless become guides and the sighted become ‘blind.’

This black cat was actually designed to ward off bad luck.

Grave of the man allegedly responsible for a series of infamous murders in Boston in the 1960s.

A quiet memorial marks the spot where the victims of the Salem Witch Trials were executed.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

One of the few Glatt kosher delis in the United States is a cornerstone of its Hasidic neighborhood.

A crumbling hospital from the 1850s on Roosevelt Island.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

A celebration of capitalism in Midtown.

An annual extravaganza of Broadway theater memorabilia.

More than 250 sakes are available in an izakaya hidden in the basement of a Midtown office building.

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

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

Try not to get slimed in Tribeca.

A semi-scholarly approach to sex.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

New York City's smallest piece of private property.

An aptly-named street near the birthplace of the modern LGBT rights movement.

A terrific purveyor of natural history objects and curios.