In the '70s, graffiti moved to subway cars

Keith Haring was inspired by graffiti's accessibility

The visual artist—known for his vibrant pop art—loved how graffiti was a democratic form, available to everyday people who wouldn't otherwise visit museums or galleries. He began drawing chalk murals in New York subway stations, remarking that it was an ideal venue because it attracted a diverse audience.

Basquiat helped move graffiti from the streets to the galleries

He took graffiti's aesthetics—cryptic slogans, bold colors, and repurposed iconography—and placed them on his canvases, helping to create what some called "post graffiti." These short documentaries, produced in 1982 and 1983, capture the nascent movement as it emerged in the mainstream art world.

One graffiti artist turned a train tunnel into his gallery

Chris Pape, also known as Freedom, began exploring a tunnel under Manhattan's Riverside Park when he was a kid. As he grew more involved with graffiti, he turned its walls into a massive art project, one that reflected both the history of graffiti and the people who made the tunnel their home.

As graffiti grew more popular, New York worked to stop it

In 1972, the NYPD made over 1,500 graffiti-related arrests. By 1973, the city was annually spending $10M to remove and limit graffiti. That same year, a poll conducted by an anti-graffiti task force found that the "vast majority" of residents did not consider graffiti to be art.

Graffiti has its own visual language, including simple 'tags,' large block letters, and complex 'pieces'

Every graffiti artist looks to create their own visual identity, but they often rely on common folk styles, especially when they're still developing their craft. "Tags" are little more than an artist's pseudonym, while "Wildstyle" takes an abstract approach to the signature. More complicated styles, like "blockbuster," are like informal billboards strapped to the sides of buildings and subway cars.

Graffiti became an integral part of hip-hop culture

The visual art form began taking off in New York alongside the music of hip-hop. Both were postmodern forms of art that repurposed preexisting materials. For graffiti, that was by using the city as canvas. For rap, that was through sampling. This retrospective not only shows how the two forms intersected, but also how the public perception of both changed over time.

Why are subway walls tiled?

In the early days of subway tunnels, architects needed to deal with dirt and moisture and make the cavernous stations less dank and dark. Ceramic tiles were easy to clean, and their glossy, bright finish helped illuminate the cave-like areas.

In 1974, Norman Mailer touted graffiti as an intellectual art form

The Pulitzer Prize winner explored the style in his 1974 Esquire essay, "The Faith of Graffiti," before expanding on it in a book with 81 photos by Jon Naar. In it, he traces the form back to its ancient roots and compares graffiti writers to Renaissance painters.

Graffiti dates back to at least ancient Pompeii, where citizens scrawled messages to one another on public walls

Graffiti exists in a legal gray area

"Street art" has become a major seller in the art world, yet many states still consider graffiti to be illegal vandalism. Copyright law complicates the situation further, offering protections for "original works of authorship fixed in a tangible medium of expression," even if they've been created illegally.

Archaeologists discovered over 11,000 examples of graffiti in ancient Pompeii

Residents drew various figures and announcements on homes, temples, and walls, much of it preserved by volcanic ash. While some were clearly intended to be artistic, scholars have noted that the ancient graffiti has more in common with social media than with the tags and murals we associate today with the art form.

Philadelphia's Cornbread claims to be the first modern graffiti artist

Darryl McCray began writing his nickname, "Cornbread," across his hometown of Philadelphia in the 1960s. That style was a way of posting a personalized signature across neighborhoods and would become known as "tagging." In time, that style spread to New York, where it took off among other young people.

One Martin Wong painting contains a secret homage to graffiti culture

After the Metropolitan Museum of Art acquired painter Martin Wong's "Houston Street," they discovered there was another work on the back of the canvas that featured contributions from some of the luminaries of the 1980s New York graffiti scene.

Read the New York Times profile of TAKI 183

The 1971 article about the young graffiti artist and his many acolytes exposed the burgeoning subculture to a large audience and also detailed the effort to clean the work from the city's walls. (Some readers may experience a paywall.)

Listen to a jazz composition triggered by the New York City Subway

A creative coder created a (synthetic) jazz ensemble that uses the locations of the city's trains to determine its performance. It's both a fascinating bit of internet culture and a fitting homage to New York, one of jazz's major hubs.

In 2018, a graffiti artist sued HBO for including their work in one of the network's shows

An episode of the HBO show "Vinyl" featured a scene with a woman walking down a New York street and passing by a dumpster tagged by graffiti artist Itoffee Gayle. Gayle filed suit against the network, despite not owning the dumpster, claiming that the network had violated his copyright and trademark rights by including his work in the show without his permission. The court sided with HBO, saying that Gayle's claims "bordered on frivolous."

A popular tag in World War II announced 'Kilroy was here'

The graffito appeared seemingly everywhere throughout the 1940s and followed a similar pattern: A man with an oversized nose peering over a ledge, with the phrase written below it. Scholars believe it was an American form of similar tags that appeared in Australia and England, making "Kilroy" a meme long before the word had entered the lexicon.

Vintage 1980s photos of the streets of San Francisco

In the early 1980s, San Francisco was changing amid increased diversity and a nascent tech boom. This series of photos from 1981 and 1982 was found of the evolving city, depicting trolleys, doorsteps, storefronts, and more from a time very different from today. Explore the vintage shots here.

How parking infrastructure reveals a region's values

As cars became more popular, the need for city parking increased. In Europe, well-established cities with limited space generally opted for more expensive underground parking beneath public spaces to preserve aesthetics. Available land and decentralized planning in the US saw more parking lots and garages built. These decisions reveal broader policy realities for these regions.

Purchasing art is a common money laundering technique

Art is easy to transport internationally, susceptible to price inflation, and usually paid for with cash, making it a frequently used money laundering tactic. Additionally, loose regulations surrounding art transactions allow buyers to remain anonymous, adding an additional layer of ease for people trying to launder money.

This famous painting was hung upside-down for 77 years

According to a curator at a German museum, an abstract painting by Dutch artist Piet Mondrian has been displayed upside down for seventy-seven years at a number of museums.

Learn about how General Motors dismantled America's streetcars

This documentary argues that GM systematically bought up and destroyed streetcar networks across the US in the 1930s, replacing them with buses and helping put the automobile at the center of American culture.

The artwork at Burning Man is impressive and transient

Huge sculptures, mutant vehicles, concert stages, the Man, and other spectacles created at Burning Man each year are often destroyed by the end of the event. If they aren't burned, they'll often be repurposed or trashed.

The squeegee kids of Baltimore

For decades in Baltimore, youth looking to earn some money have waited at high-traffic intersections to offer quick windshield washes for a fee. While some drivers find it encouraging, a positive way to spend time, others get annoyed, resentful, or...

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

Ingenuity and advanced engineering have allowed trains to overcome extreme landscapes

The Jungfrau Railway utilizes electric trains powered by hydroelectric energy to ascend the Swiss Alps, while Poland's Elbląg Canal hauls ships along cable-powered tracks driven by waterwheels. Germany's Wuppertal monorail navigates bends as it glides over a river valley, and New Mexico's Holloman High-Speed Test Track can achieve speeds of Mach 8.6 for rocket sleds.

How house colors can indicate gentrification

Reporters from the Washington Post share an analysis that indicates gray and neutrally toned houses are signs of gentrification in a neighborhood. Visuals of different paint swatches help illustrate which colors are chosen for newly built homes in certain DC districts.

Mid-century modern graphic designers, known for their bright colors and bold lines in advertising, also found success with children's books.

Tattoos remain visible on your skin thanks to immune cells called macrophages

'Grand Canyon of the Yellowstone,' a work by American painter Thomas Moran, inspired Congress to establish Yellowstone National Park.

Power lines are dotted with large, brightly colored balls to improve the visibility of these thin wires to helicopters and small planes and help prevent potential crashes.

70 years ago today, city officials in Santa Cruz, California, banned rock 'n' roll to protect its youth from corruption after witnessing a 'provocative' concert the night before.

In 1915, workers recovered a submarine-like vessel from the Chicago River, prompting fears of German espionage

Hear 50 years of iconic hip-hop samples, the genre's foundational looped tracks

American dance legend Martha Graham, sometimes called 'the Picasso of dance,' refused to perform at the 1936 Olympics in Berlin and conceived the piece 'Chronicle' in response to the experience.

Dorothy's famous entrance into Oz in 'The Wizard of Oz' relied on analog tricks, including a body double and sepia-toned paint, as much as it did on technology

In 1984, Operation Smash Hit intentionally crashed a 239-ton train into a nuclear waste canister at 100 miles per hour to prove the canister's safety, which remained completely intact and lost just 0.29 of its 100 pounds of pressure.

When you complete a CAPTCHA on a website to prove you are human, you may be unknowingly training algorithms for self-driving cars, whose systems require training data to help identify crosswalks, bicycles, and other outdoor objects.

See these 16 pieces of art evoking phobias of snakes, flying, spiders, and more. 

When a Paris department store hesitated to sell Estée Lauder's perfume, she 'accidentally' broke a bottle, causing the smell to spread throughout the store and shoppers to start asking to buy the scent.

Shooting stars, or meteors, are fragments of asteroids and comets that burn up as they enter Earth's atmosphere, creating streaks in the sky called meteor showers.

Scientists testing how climate change affects plants found, in a years-long simulation study, that poison ivy grew 70% faster with the resulting extra carbon dioxide.

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

Objects can be 3D printed with light by projecting 2D computerized tomography (CT) scans onto rotating cylinders of resin, which solidify upon exposure.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

Existentialist writer Jean-Paul Sartre coined the famous phrase 'Hell is—other people' in his play 'No Exit'

Hotels in Cannes, the glamorous city on the French Riviera, hire hawks to ward off seagulls during the city's famous film festival.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

US housing costs have risen by roughly 175% between 1991 and 2026—but a growing number of Gen Zers are becoming homeowners anyway. In 2025, 4% of homebuyers were Gen Z, up from 3% the year before.