What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

A century-old network of freight tunnels underneath the city's historic business district.

These abandoned grain silos and tunnels are an urban exploration dream.

A hot dog stand where the heads are just as hot as the dogs.

Beloved bar home to musicians of all eras and reputations.

A European-style bath house in Chicago.

Chicago's North Park Village was once the largest municipal sanatorium in the country.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

An antiquated German apothecary on Chicago's North Side.

A Bibliophile's Dream.

Self-sufficient greenhouse floating on the Hudson River.

Two New York rooftops are home to the largest rooftop soil farms in the world.

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

Underground vaults of a former brewery beneath Brooklyn's Crown Heights are now used to ripen cheese.

A restaurant on Staten Island showcases a different grandmother’s cooking every night.

The best place in New York to pick up the controversial, notoriously foul-smelling Asian "king of fruits."

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

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.

An easy to overlook storefront hides some of the most authentic and regionally diverse Chinese food in New York.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.