Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

A natural sandstone bridge hidden in the Sewanee forest.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

Despite not growing anywhere near New York City, bananas are ripened in a pressurized room in the Bronx using precise banana science.

Collect holy water from a Bronx grotto.

The first and only carousel with a lineup entirely of insects.

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

A former connection to City Island, it has been abandoned since the 1930s.

A temple belonging to the largest Buddhist order in South Korea nestled in the middle of New York City.

This Orthodox Church's exterior is rather unorthodox.

Rare moles meet activism at this Oaxacan eatery.

The unique design of this former quarry provides ideal acoustics for concerts.

A 1920s home transformed into an immersive art experience, where every room is a portal to another realm.

A century-old magnolia tree is the only living landmark tree in New York City.

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

This family-owned bakery is one of the last places in Brooklyn to sell the Nation of Islam–inspired bean pie.

A mosaic made of materials gathered from this Brooklyn community adorns the walls of this tunnel.

This striking arch, one of the first architectural elements constructed in Prospect Park, was recently restored to its original glory.

These small stands sell Malian snacks to worshippers and passersby after Friday prayers in Harlem.

This Detroit ruin was once a gothic bastion of its community, but now it stands as a haunting ruin.

The collection of ceremonial and cultural objects spans many countries and hundreds of years.

Detroit housing collective working to create an "environment for revolutionary change."

Astounding collection of coin-operated games and automata.

Immortal combat in a Moscow museum.