This once-private estate is now a dreamy, meditative garden that's open to the public.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

One of the smallest churches in the United States is located along the side of the road in a residential neighborhood.

An institution dedicated to the towering buildings that make up skylines in New York City and around the world.

The only subway station in the city that still makes use of gap fillers.

Slurp sesame noodles at the third-generation family-run establishment that invented them.

All of the Malaysian sweets at this shop are made daily with a whole lot of love.

A former Tibetan monk made a name for himself selling some of the best beef momos in New York.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

Play everything you see at a museum dedicated to a town's historic organ industry.

A giant toy jack made of numerous welded-together fire hydrants.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

You don't have to be an ambassador to dine like one.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

Slyly buy a shake in the Parker Meridien lobby.

This semi-hidden Manhattan restaurant is based out of a loading dock.

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

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

Mysterious 500-year-old tapestries depict a unicorn hunt.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

This dilapidated castle-like structure overlooks the Hudson River at one of its widest points and was once home to nuns.

An enormous cat made of recycled wood scraps.

Have a steam and some blini at this cafe in a century-old bathhouse.