Twice a year, this floating library delivers thousands of books to the remote islands of Stockholm’s archipelago.

An artistic garden environment of tile mosaic sculptures.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

In 1986, Keith Haring was arrested for painting this anti-drug mural on a Harlem handball court.

This sculptural piece by the artist Tom Otterness doubles as a jungle gym.

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

An art installation commemorates journalist Nellie Bly's undercover reporting inside a New York asylum.

This theater opened in 1998, but both the building and the puppeteers who perform there have a distinguished history.

A playground the size of a city block is a modernist monument to civic values and public housing.

Supremely flaky treats await at Amadou Ly’s boulangerie and patisserie.

Cooks at this tiny takeout spot grind their rice flour in a stone mill each morning for perfect cheung fun.

Amid skyscrapers and traffic exists this unique aquatic ecosystem.

On this island, you suck away your garbage via an elaborate pneumatic tube system.

Home to some of the last true noodle artisans in New York.

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

Stunningly detailed mosaics in a New York subway station bring life to the Weimaraners of artist William Wegman's work—and to thousands of commutes.

The impeccably spiced roast pork buns at this bakery are worth the wait.

Established in 1937, the oldest candy shop in New York City boasts a rainbow-colored inventory that would make Willy Wonka envious.

The façade of this building looks like a bingo board, but it's really a giant clock by a famed graphic designer.

Dine on dumplings at the oldest dim sum restaurant in New York.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

Walking around West Harlem reveals a scavenger hunt of beautiful bird murals.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.