How the Golden Gate Bridge was constructed

Da Vinci’s ingenious self-supporting bridge

Without using glue or nails, the brilliant polymath Leonardo Da Vinci was able to construct a sturdy bridge of wood logs. This video unpacks the genius civil engineering behind this concept and offers a visual demonstration of how it worked. See how Da Vinci accomplished this feat without using permanent parts, and how his bridge got even stronger as weight and force was added.

An architect ranks the best bridges in the world

Architext Ezra Groskin builds bridges and argues that the best bridges do more than allow traffic. They should, he believes, encourage human interaction and lingering to ultimately become a destination of their own. Explore ten stunning designs that connect communities, from New York to Switzerland.

The century of the Panama Canal

The Panama Canal connects the Atlantic and Pacific Oceans through a 51-mile route that transformed global shipping when it opened in 1914. This breakdown covers how it was built, the workers behind its construction, and why its future may be challenged by climate and competition.

Infrastructure projects in New York are much more difficult today

The Erie Canal was one of the most ambitious infrastructure projects in American history. Many have said such an effort would be impossible today. This article explores why that is the case and ponders the future of large-scale American infrastructure development.

The 52-mile marvel of engineering inside Glacier National Park

Glacier National Park is home to over one million acres of natural beauty, but it also includes 52 miles of a manmade miracle in Going-to-the-Sun Road, which takes drivers on a majestic tour through some of the park's most breathtaking views. This brief history and photo gallery allows you to gain an appreciation for the incredible engineering behind the road’s construction.

How the US built the Interstate Highway system

As late as World War II, it took a well-prepared motorist roughly 10 days to cross America from coast to coast in a car. That all changed when the nation undertook its biggest public infrastructure project in 1956, the National Interstate and Defense Highways Act, initiating a 36-year, $114B mission to lay 41,000 miles of roads across America. Watch a smart overview here.

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.

The Washington Monument was completed in 1884 after nearly 40 years of delays and funding shortages

At the time of its completion, the Washington Monument stood as the tallest building in the world. Its construction stalled for decades due to political disagreements and the Civil War. The 555-foot obelisk cost nearly $1.2M to build (around $40M in today's dollars).

Watch a time-lapse of the installation of the New Safe Confinement structure

The world's largest movable metal structure was built to contain the radioactive material from the 1986 Chernobyl disaster, which had previously been confined within a structure built to last no more than 30 years. The new structure was slowly rolled along rails over the course of two weeks.

Engineers shut off Niagara's American Falls for six months in 1969

In June 1969, the US Army Corps of Engineers diverted the Niagara River to halt flow over the American Falls. The dry riverbed allowed geologists to study erosion and remove dangerous rock buildup.

How the Grammy Awards are made

The Grammy Awards aren’t just trophies—they’re handcrafted works of art. Since 1959, each Grammy has been meticulously made from a custom metal alloy called “grammium.” From its origins to the process behind every award, here’s a look at the craftsmanship behind music’s most prestigious honor.

The spiralling structure of the Guggenheim Museum in New York is itself a work of art

The Solomon R. Guggenheim Museum is a UNESCO World Heritage Site in Manhattan's Upper East Side. The contemporary art museum, known for its unique spiral structure, was Frank Lloyd Wright’s final work.

The hidden engineering of gas stations

Contemporary gas stations are the result of a century of engineering progress. In the early 1900s, only a few thousand cars drove around, and they used kerosene. As vehicles and cheaper gasoline became more popular, fire hazards grew, forcing the invention of fuel pumps, underground storage tanks, and the automatic shutoff valve—all engineering marvels.

Building the first atomic bomb required unprecedented coordination

Creating the first atomic bombs demanded breakthroughs in physics, engineering, and logistics—uniting elite scientists with tens of thousands of workers across the US. This in-depth history explains how the Manhattan Project overcame those challenges.

The high-tech mechanisms of the Roman Colosseum

The Roman Colosseum is one of the most iconic amphitheaters in the world and still partially stands today. Aside from its sheer size, the arena was equipped with some of the most high-tech engineering from the classical world, including sophisticated lifts, a huge retractable awning, and an underground network of tunnels, elevators, and trapdoors.

The Geysers is the largest geothermal power complex in the world

Despite the Mayacamas Mountains area north of San Francisco lacking geysers, the name given by a grizzly bear hunter stuck after the construction of The Geysers Resort Hotel to accommodate tourists. Natural steam vents in the region are funneled into more than 12 geothermal plants, each capable of powering about 40,000 homes.

Poems and stories inscribed on the walls of a US immigration island

What Ellis Island was to the East Coast, Angel Island was to the West. Just off the coast of San Francisco, this processing center became a detention center for those targeted by exclusionary immigration laws. Click here to read some of the stories left by the detained.

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

Why high-speed rail hasn't worked in the US

High-speed rail connects cities across Europe and Asia, but American attempts have faced ballooning costs and delays. California's failed attempt to connect San Francisco and Los Angeles is the most prominent example of the dysfunction.

Mark Twain coined the phrase 'The Gilded Age'

The writer's 1873 book "The Gilded Age: A Tale of Today" (cowritten with newspaper editor Charles Dudley Warner) satirized the speculative investing and greed that took place following the Civil War. That era is now known as the Gilded Age, a term derived from the novel. (Some readers may experience a paywall.)

Nearly all of China's construction sand is artificial

Roughly 50 billion tons of sand are used in construction every year, mostly extracted from oceans, beaches, and rivers. To avoid depleting natural sand deposits, China crushes rocks and used materials to create an artificial sand, which it uses in 80% of its construction projects.

The name 'Silicon Valley' arose from the founding of Shockley Semiconductor Laboratory in Fairchild Semiconductor in 1956-57, founded near Stanford University in Palo Alto

Reagan’s 'tear down this wall' speech challenged Soviet control of Berlin

In 1987, President Ronald Reagan stood at the Brandenburg Gate of the Berlin Wall and urged Soviet leader Mikhail Gorbachev to “tear down this wall.” The speech became one of the most iconic moments of the Cold War and a symbol of growing pressure on the Eastern Bloc.

The Gold Rush helped turn Napa into wine country

In the 1830s, the arrival of settlers carrying European rootstock grapevines to Napa kick-started the valley's wine industry. Ten years later, the Gold Rush brought scores of wine-loving Europeans and their descendants to the area. Recognizing an opportunity, Charles Krug opened the valley's first commercial winery in 1861, which produces bottles to this day.

Before Silicon Valley, the American innovation hub was New Jersey

Today, Silicon Valley is known for its dominance in the tech world. But before it rose to prominence, New Jersey was the country's innovation hub. From Thomas Edison's light bulb to the transistor, New Jersey was considered the nation's leader in technology.

The American Society of Civil Engineers' infrastructure report card gave the US a C in 2025, its highest grade since the project launched in 1998.

How the Bank of Italy became Bank of America

Amid the devastation of the 1906 earthquake in San Francisco, Italian immigrant and local banker Amodei Giannini managed to keep hold of a substantial amount of currency. On a handshake, Giannini loaned needy locals money to rebuild. The enterprising banker would go on to form one of the first banks for the middle class, the Bank of Italy, which would go on to become the Bank of America in 1930. Read about the founder here.

The value of a 400 oz gold bar hit $1M for the first time in 2024

On Aug. 16, 2024, the gold bar size often seen in movies hit $1M in value for the first time when the price of gold reached $2,500 per troy ounce. A data visualization shows what other gold bar sizes are worth and compares them to the size of an iPhone.

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

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

A researcher recently discovered an interview from 1967 between groundbreaking journalist Joan Didion and the Grateful Dead, years before the band became an institution.

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

The animatronic shark from Steven Spielberg's 'Jaws,' the first modern blockbuster, was a complex underwater apparatus called 'Bruce.'

The Mona Lisa's celebrity status and repeated restorations have obscured what made the painting so revolutionary for its time

At the beginning of the 20th century, a group of young men ate standard American food—replete with food additives like borax and formaldehyde—as part of government research to better understand food safety.

See how fireworks are made and learn how metals like magnesium and copper are responsible for different colors.

Discover the catastrophic consequences of a failure of the US electrical grid—something that is more likely than many Americans think.

Jimmy Carter signed a 1978 bill that legalized home brewing, a move credited with kick-starting the craft beer industry.

Hear about the 250-year history of the United States Postal Service, complete with some of its strangest deliveries, important innovations, and the figures that made it an American institution.

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

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

Frank Lloyd Wright's houses are historically hard to sell because they're old, subject to local landmark commissions, and often unfashionable

Many legends about George Washington, including his supposed wooden teeth and the story of cutting down the cherry tree, lack evidence.

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.

Brandi Chastain, the star of the 1999 US victory over China in the 1999 Women's World Cup, was a last-second choice to take the penalty kick that sealed the victory.

The first image of a black hole was captured by creating an Earth-sized virtual observatory from a network of eight radio telescopes.

About 2,000 US babies are born annually without some portion of their limbs, potentially leading to a lifetime of pricey prosthetics.

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

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.

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.