The mysterious Fort Knox houses much of America’s gold reserves

Fort Knox was built to be a secure facility for the US Treasury's gold reserves

The gold reserves were previously used to back the US dollar under the gold standard. Although the US went off the gold standard in 1971, Fort Knox continues to store a large portion of the nation's gold reserves.

The 6 US Mint locations across the country work together to create America’s coins and more

While the US Mint at Denver makes circulating and collectible coins, the US Bullion Depository at Fort Knox stores much of the country's gold. Other locations include the San Francisco Mint, the Philadelphia Mint, the headquarters of the US Mint in Washington, DC, and the West Point Mint.

The story of the ‘forgotten’ US Mints

Some US Mint branches that are now inactive were established during gold rushes during times of great demand. These include mints in Dahlonega, Georgia, Charlotte, North Carolina, and Carson City, Nevada. This video dives into their respective stories.

22 fascinating discoveries of massive gold coin hoards

The gallery highlights major gold coin treasures from ancient to modern times, from the Saddle Ridge hoard in California in the 1800s (now worth $10M) to finds in Baltimore, Kentucky, and more. Each discovery reveals something about the period, with some buried and others left in vaults.

Throughout most of the 1800s, US currency was backed by silver and gold

In post-Civil War America, the government moved to use only the gold standard. This was how US currency was backed for decades in the US. You can read a comprehensive explainer on the gold standard and its history in the US to learn more.

The idea for the Federal Reserve was conceived in secret in 1910—with bankers donning duck hunt gear for disguise while traveling to a remote country club on Georgia's Jekyll Island

A ‘gold bug’ is a person who is bullish on gold as an investment

"Gold bugs" often argue that fiat money allows governments to engage in financially reckless behavior (think: chronic borrowing). They also say the price of gold rises as the value of fiat currency falls.

America’s founding documents were once housed in other government buildings

Today, the Constitution and Declaration are displayed at the National Archives. Still, for more than a century, they were kept by other federal institutions—including the State Department and the Library of Congress—before gaining a permanent home in the 1930s.

A private repository of millions of FOIA-requested documents

The Black Vault is one of the largest privately run archives of declassified documents in the world. Explore UFO sightings, doorways on Mars, and more.

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.

The US government reportedly hoards 1.4 billion pounds of cheese in caves

In limestone mines said to be hundreds of feet below the ground, officials have allegedly stored surplus cheese to keep the industry afloat amid ebbs and flows in demand.

The Federal Reserve Act's foundation was laid in a secretive meeting at the world's most prestigious club

Republican Sen. Nelson Aldrich of Rhode Island organized a highly secretive meeting of the minds at the world’s most prestigious club on Jekyll Island, Georgia, where a who’s who in the financial world hashed out details over the course of a week.

Gold has no nutritional value or flavor—but edible gold is still popular

Gold is a pretty expensive topping. Nonetheless, luxury menus around the world are offering food staples—think bagels, chocolate, and burgers—wrapped or dusted with gold. What's the deal with this fascination?

Visual Capitalist shows the top 50 countries by central bank reserves

As of 2024, China, Japan, and the United States held the top three spots in terms of the value of their respective central bank reserves.

The $1 bill hasn’t been redesigned in over 60 years

From a counterfeiting and forgery perspective, this makes the $1 bill one of the least secure American banknotes. In this video, the Wall Street Journal sits down with a leading currency expert to explore the techniques used to keep cash safe and figure out what's going on with the $1 bill.

There is a secretive bomb-proof bunker located under the White House

Built in 1942 during World War II, the Presidential Emergency Operations Center lies beneath the East Wing. Designed to protect the president during air raids—and later nuclear threats—it remains a top-secret command site used during crises like 9/11.

The story of Kryptos, the long unsolved cryptographic sculpture outside the CIA's headquarters

Made by American artist Jim Sanborn, the sculpture features four copper plates engraved with messages written with the 26 letters of the Latin alphabet and question marks. The last of these plates was solved in 2025, but the piece remains of interest to cryptoanalysts.

Fiat money is a currency with no intrinsic, tangible value

Unlike the gold standard, where a nation's currency is linked to the value of gold, fiat money gets its power from the public's trust in its value.

33% of Americans say they don’t know very much about what the Fed does

While most Americans grasp the central bank’s impact on curbing inflation, they don’t know that the Fed is tasked with what is called a “dual mandate” to provide price stability and maximum employment. Furthermore, few understand the Fed is independent—it does not answer to Congress or the US president.

Minting a coin that can pay off the federal debt has been proposed as a quick fix to rampant borrowing

It’s uncertain how financial markets would react to such a large cash injection. Some economists warn it could trigger massive inflation. Others say the nation needs a clean slate.

The hidden hallway behind Mount Rushmore and why it’s unfinished

Mount Rushmore was designed to be more than a massive monument to US presidents, and its ambitious plans were part of the reason why. This fascinating video explores its backstory, creation, and the hidden tunnel behind President Lincoln's head.

Earth's core is leaking precious metals, including gold

Earth's core, containing 99.999% of all known gold, is leaking trace amounts of precious metals into the mantle. Advanced isotopic methods have detected this leakage at volcanoes in Hawai'i, providing new insights into the movement of material beneath Earth's surface.

A visit to the Federal Helium Reserve, which once supplied up to 30% of US helium

The underground storage facility in Amarillo, Texas, was established by the Helium Act in 1925, when helium was viewed as a strategic resource whose export could enable other nations to use it for military airships. The Helium Privatization Act of 1996 instructed the Department of the Interior to begin selling off the facility and reserve, with the final sale occurring in 2024.

For decades, the US has considered building a permanent nuclear waste repository

All nuclear waste would have been stored at Nevada's Yucca Mountain, but the Obama administration indefinitely stalled the project after intense community backlash. Spent fuel is now stored at more than 80 locations in 36 states, raising safety concerns.

The US dollar is the most widely circulated currency in the world, and is involved in nearly 90% of global transactions

The locksmith who posthumously opened Prince's music vault

When legendary musician Prince died in 2016, he left behind thousands of unreleased songs in a locked vault, and no one knew the combination (even Prince had forgotten it before his death). Safecracker Dave McOmie was called in to break the 6,000-pound Mosler American Century vault by microdrilling into it and using a periscope to view the combination lock.

The median trust fund contains roughly $285K

That’s according to data from the US Federal Reserve. There isn’t a specific net worth that can help determine whether or not someone needs a trust—but contrary to popular belief, trust funds can be great estate planning tools, even for people who aren’t ultra-wealthy.

Explore fun facts from the USPS, including unique post office buildings, a stamp that traveled past Pluto, and more.

The original copy of the Declaration of Independence is not a pristine document, and even features a smudged anonymous handprint in the bottom left corner.

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

Before the current East Wing ballroom project, only two White House renovations in the past 100 years cost more than $10M.

In 1963, a basement renovation in Turkey revealed a passageway to a hidden, multilevel underground city that once housed as many as 20,000 people

Despite being favored by 87% of Americans, Congress does not have term limits.

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.

See how Budweiser's famous Clydesdales spend their days at Warm Springs Ranch, where roughly 70 to 80 of the beer brand's giant horses can be found at any given time.

Calculate how much of your tax dollars go to each federal program based on your income, filing status, and number of children

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

The story of Dollree Mapp, whose legal challenge over her 1957 conviction for possessing "obscene material" led to a major strengthening of the Fourth Amendment

In 2025, four executives from large tech companies were given positions in the US Army Reserves—including Palantir Chief Technology Officer Shyam Sankar, which reinforced Palantir's ties with the US military and its role as a leading defense partner.

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

Most of the observable universe's volume consists of voids and supervoids—enormous regions of space with little to no galaxies, stars, or light.

Against his wishes, Albert Einstein's brain was removed before his cremation, and the pathologist responsible stored it for decades in mason jars within a beer cooler.

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

Warren Buffett's former professor Benjamin Graham is known as the 'father of value investing,' a strategy in which investors seek to buy stocks trading below their intrinsic worth.

See photos of Meteora, a mountainous site in central Greece, home to 14th-century monasteries perched atop soaring outcroppings.

Double world record holder Hunter Ewen helped conquer his fear of balloons, called globophobia, by training to win Guinness World Record titles for balloon inflation.

The identity of the Tank Man in the iconic photo from the 1989 Tiananmen Square protests remains unknown and was possibly killed.

Sunflowers have long been a symbol of nuclear disarmament because they can extract large amounts of radioactive cesium from soil.

Search a massive database of over 4 decades of clues from the TV quiz show 'Jeopardy!'