A lush green oasis in the middle of Chicago.

Tucked away amongst townhomes lies a restored, early 20th-century tea house and garden, the only remains of a historic estate.

This botanical garden outside Chicago boasts an array of more than 300 varieties of lilacs.

Julia Buccola Petta's body was peculiarly well-preserved when it was exhumed six years after her death.

It was originally part of a "terrible lizards" collection at the 1964 New York World’s Fair.

Seriously good slices of Sicilian pizza lurk at the back of the Bronx's oldest enclosed market.

A Wisconsin kitsch palace from the 1930s lives its second life in 21st-century Brooklyn.

Some of New York's best tacos can be found in the back of an unassuming bodega in Queens.

Every dish is blessed in this basement eatery beneath a Hare Krishna temple.

A B.Y.O.B. Mexican cantina lives inside one of the last tortilla factories in Brooklyn.

Come for the waffles, stay for more waffles.

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

A Jewish deli run by Yemeni Muslims in an Afro-Caribbean neighborhood is quintessential Brooklyn.

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

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

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

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

“Invented in Key West, Perfected in Brooklyn."

Slyly buy a shake in the Parker Meridien lobby.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

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

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

Nikola Tesla's former home contains an homage hidden from plain sight.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.