1

The horse diaper

Image: Lucia Macedo

Designed to catch manure in crowded cities—a problem once so severe that it shaped public infrastructure as well as the entrances to houses—the horse diaper was an invention meant to be strapped beneath working horses pulling carts and carriages.

The idea was to reduce disease and street filth during the horse-powered urban era. While the device saw limited use before automobiles rapidly replaced horses, similar designs are still occasionally used in modern veterinary practice.

2

The baby cage

Image: Taylor Flowe

Built as wire cages attached to apartment windows, so-called "baby cages" allowed infants to get fresh air when outdoor space was unavailable. Some models were guaranteed to safely hold over 30 pounds.

While alarming today and ultimately abandoned due to obvious safety concerns, the designs likely inspired some of the baby-proofing nets used today.

3

The pneumatic subway

Image: Eddi Aguirre

In the late 1860s, American entrepreneur and inventor Alfred Ely Beach set out to prove the feasibility of a human-sized pneumatic subway system beneath New York City, capable of moving both people and cargo using nothing more than air pressure.

The prototype was set up as a public attraction and carried passengers along a tunnel just over 300 feet long, from a station to a dead end. Despite its initial success, bureaucratic obstacles and high costs halted expansion, leaving it as a functional but largely forgotten underground experiment.

4

The mechanical horse

Image: Gabriel Tovar

Created for exercise and riding practice, the mechanical horse used a system of gears, cranks, and pedals to simulate walking and trotting motions while the rider sat in a saddle-like seat. It was marketed to urban riders and cavalry trainees who lacked access to stables or live horses.

Though bulky and impractical for widespread use, the device anticipated modern fitness machines by replicating real-world movements for conditioning and skill retention, rather than simple repetitive exercise.

5

The first metal detector

Image: Fer Troulik

After a failed assassination attempt on President James Garfield, Alexander Graham Bell hastily built an early metal detector in an effort to locate the bullet lodged in his body. The device functioned as intended, but it was unable to find the bullet because metal bed springs interfered with the signal.

Despite this setback, Bell’s early design proved the concept and directly influenced the development of modern metal detectors.

6

The pet-powered butter churn

Image: Matt Bero

In an inventive twist on animal-powered machinery, some 19th-century American farmers rigged small treadwheels for dogs, cats, or even goats to generate kinetic energy for churning butter. The animal ran inside the wheel, turning a rope or pulley connected to the churn.

While technically functional, the system was limited by the animal's willingness to cooperate and the small amount of power it generated.

7

The umbrella hat

Image: Claudio Schwarz

Robert W. Patten, often called the "Umbrella Man," patented one of the first commercially successful hands-free umbrella hats. It strapped a small umbrella directly to the wearer’s head, providing both sun and rain protection while keeping the hands free for work or walking.

His original design even included a mosquito net attached to the canopy. Patten didn’t enjoy much commercial success but became somewhat of an eccentric and comical popular figure, partly due to a series of comics that were inspired by his unusual invention.

8

The one-wheel motorcycle

Image: CJ Toscano

In 1971, American inventor Kerry McLean built and refined a monowheel—a one‑wheeled motorized vehicle in which the rider and engine sit inside the wheel’s circumference.

Since then, various attempts have been made to build on his original design, but it remains a niche vehicle used primarily for entertainment rather than practicality, as riders must be highly skilled simply to turn or even stay upright.

9

The first talking doll

Image: Holly Ward

In 1890, Thomas Edison embedded miniature versions of one of his most popular inventions —the phonograph—inside dolls so they could recite nursery rhymes.

While the idea was innovative, the technology was not yet there. The recordings were fragile, distorted, and often failed to work properly. The dolls were pulled from the market within weeks due to customer complaints, making it one of Edison’s rare commercial failures.

10

The glass harmonica

Image: Francesco Bovolin

Faithful to his eccentricity and inventive spirit, Benjamin Franklin redesigned the existing glass harp into a rotating spindle of glass bowls, played by touching the spinning rims with wet fingers, which he called the "glass harmonica."

The instrument produced eerie, sustained tones unlike anything else of its era. However, its fragile nature made it somewhat impractical, and the rotating mechanism posed a potential danger to the player if anything went wrong.

1

The Big Apple, New York City

Image: Jermaine Ee

New York may be famous for bagels, pizza, and hot dogs , but its nickname has nothing to do with fruit. The term "Big Apple" started popping up in horse racing circles in the 1920s, when jockeys and trainers used it as shorthand for the city’s top racetracks. A sportswriter named John Fitz Gerald picked it up and popularized it in his columns. Decades later, the city even used it in tourism ads, and the rest is history!

2

The Windy City, Chicago

Image: Dulcey Lima

Chicago’s nickname might sound like a weather forecast, but the truth is more colorful. Newspapers in the late 1800s used "Windy City" to poke fun at local politicians , suggesting they were full of hot air. Sure, Lake Michigan’s winds played a part, but it was really the dig at the city’s bragging that made the phrase hit home!

3

The City of Brotherly Love, Philadelphia

Image: Catherine Kerr

This one is actually quite simple, actually. Philadelphia’s name comes from the Greek words for love, phileo, and brother, adelphos . The city’s founder, William Penn, wanted it to be a place of religious freedom and fair treatment, even making agreements with Native Americans over land. In short, the nickname reflects the city’s values. Beautiful, isn't it?

4

Sin City, Las Vegas

Image: David Vives

We don’t really need to explain why Las Vegas is called Sin City: casinos, nightlife, and more than a little temptation . You know how the saying goes, what happens in Vegas… But the roots go deeper. In the early 1900s, Block 16 downtown had a reputation linked to illegal businesses, and the label stuck. Nevada later legalized gambling in 1931, and that sealed Las Vegas’ image as the country’s playground of vice.

5

The Big Easy, New Orleans

Image: Harold Wainwright

New Orleans picked up the nickname "The Big Easy" in the 1970s as a playful contrast to New York’s "Big Apple." The first to use it was a columnist, and later a novel and film with the same title helped spread it. The name suits the city well because its music, food, and culture have an effortless, laid-back feel that still defines New Orleans today.

6

Beantown, Boston

Image: Lance Anderson

Boston baked beans are behind this nickname , but you probably already figured that out. Now, let’s look at the deeper layer here: during the colonial era, molasses poured into the city as part of the triangular trade, and it flavored both rum and beans. Traders nicknamed Boston "Beantown" back then, though today it is mostly tourists who still use the term.

7

The Emerald City, Seattle

Image: Luca Micheli

Seattle’s leafy scenery gave it the name Emerald City. Surrounded by water, rain, and forests, the city is filled with parks like Discovery Park and the Arboretum, which keep it vibrant throughout the year. The nickname highlights Seattle’s natural beauty, providing a refreshing contrast to its reputation for gray skies.

8

The Mile High City, Denver

Image: Owen Lystrup

Denver sits at an exact elevation of 5,280 feet above sea level, which is why it’s called the Mile High City. Fun fact about this: at Coors Field, the local baseball stadium, a row of purple seats marks the one-mile line . Visitors often notice the altitude the first time they climb a hill or sip a beer, so the nickname is more than just clever branding. Do you like this city?

9

The Magic City, Miami

Image: Pontus Wellgraf

Miami earned the nickname Magic City not for magicians (that would’ve been a fun story, right?), but for how quickly it grew . In the late 1800s, Julia Tuttle, a local landowner, helped bring the railroad and development to the area. In no time, Miami transformed from farmland into a bustling hub. We could say it was magic, don’t you think?

10

The City of Angels, Los Angeles

Image: Henning Witzel

Some nicknames have more intriguing stories, but that’s not the case for LA. Los Angeles’ nickname is about as straightforward as they come. "Los Angeles" translates directly from Spanish as "The Angels." In short, this elegant nickname mirrors the city’s name itself, one that’s full of angels, apparently!

1

Double title

Image: Tingey Injury Law Firm

Holding an important office is a tremendous honor, but it can also be a stressful experience, right? Well, imagine not only serving as the President of the United States but also becoming the Chief Justice of the Supreme Court! There has only been one person in the entire history of our country who has held both positions.

We are talking about William H. Taft, who was elected as Theodore Roosevelt's successor and served as President of the United States from 1909 to 1913. But another achievement awaited him a couple of years later: he served as Chief Justice from 1921 to 1930, appointed by President Warren G. Harding.

2

Bill cover

Image: Kenny Eliason

Being featured on the front of a banknote is an honor that only a few have received. Today, we can see Presidents, Founding Fathers, and other important figures from our national history on our banknotes and coins. But did you know that U.S. paper money has also featured Supreme Court Justices?

Yes, that's right! Only two Justices of the Court have had their faces on U.S. bills: John Marshall, whose picture appeared on an early version of the $500 bill, and Salmon P. Chase, who was featured on the $10,000 bill. Today, those bills are no longer in circulation.

3

Wig: yes or no?

Image: J. Amill Santiago

Towards the end of the 18th century, some judges still kept the tradition of wearing the classic white wigs. During the first session of the U.S. Supreme Court in 1790, only one Justice showed up wearing a wig: William Cushing.

Apparently, his fashion choice was not well received. In fact, one story has it that Thomas Jefferson saw him and allegedly said, "For heaven's sake, discard the monstrous wig!" Thus, Jefferson demonstrated his willingness to distance himself from certain European customs.

4

Justice and sportsman

Image: Melissa McGovern

Serving as a Supreme Court Justice is not a job for everyone, nor is being a distinguished sportsman. Surprisingly, there was one man who did both.

Justice Byron Raymond "Whizzer" White, born in Colorado in 1917, was a lawyer, jurist, professional football player, and Supreme Court Justice. Quite a resume, huh?

White became an NFL player in 1938, but his sports career ended in 1940 due to some injuries while playing for the Detroit Lions. A couple of years later, he decided to pursue a law career, and in 1962, he became an Associate Justice of the Supreme Court after being nominated by none other than John F. Kennedy.

5

Better late than never

Image: Tim Mossholder

The U.S. Supreme Court didn't have its own fully functional building until 1935. That means the Justices operated in different locations for 145 years!

The first session of the Court, in 1790, was held in New York City at the Royal Exchange Building. Later, the Court met in Philadelphia's Independence Hall until 1800, when it finally moved to Washington, D.C. However, the capital city at that time didn't have a designated building for the Highest Court, so its members met in different spaces within the Capitol Building, even in the basement!

In the early 1930s, construction on the current Supreme Court building finally began.

6

The Highest

Image: Edgar Chaparro

When someone says "The Highest Court of the Land," they're clearly referring to the Supreme Court. However, it seems there's another "Highest Court" that many of us haven't heard of before.

Located on the fifth floor of the Supreme Court building, you can find another court: a basketball court. Since it's literally on the highest floor, the Justices playfully call it "The Highest Court of the Land." Working is important, but so is exercising!

7

Many appointees

Image: Ben Noble

Among their many other tasks and duties, U.S. presidents are also responsible for nominating justices to the Supreme Court. These nominees must then undergo the Senate confirmation process before they officially become justices.

Throughout U.S. history, some presidents have appointed more justices than others. Want to know who appointed the most? That was George Washington, with a total of 11 justices! The second place goes to Franklin D. Roosevelt, with 9 justices during his time in office. In third place, though a bit further back, is Andrew Jackson, who appointed 6 justices to the Supreme Court.

8

The youngest

Image: Bermix Studio

Among the many names that have served on the Supreme Court, some have stood out for different reasons. That is the case of Joseph Story, who was officially the Court's youngest appointee, nominated by President James Madison in 1811. How old was he? Just 32! Despite his young age, Story served as a justice for 34 years and contributed to our country's justice in many ways.

Most Supreme Court justices reach their positions with a lot of experience, often between the ages of 50 and 55, around 20 years older than the young Story.

9

A long-standing tradition

Image: Constantin Wenning

Have you heard of the famous "conference handshake"? This tradition has been part of the Supreme Court for many, many years. Do you want to know its origin and what it is all about?

The conference handshake is a long-standing practice where the justices of the Court literally shake hands with each other before taking their seats.

This custom originated at the end of the 19th century, and one of its promoters was Chief Justice Melville W. Fuller. From its beginnings, the greeting was intended to demonstrate that, while they may have differences, the justices must ensure harmony and respect above everything else.

10

Quill pens

Image: Pierre Bamin

The black robes and the handshakes are not the only traditions at the Supreme Court. There is another longstanding custom that continues to this day.

Whenever an attorney presents an oral argument before the Supreme Court for the first time, they are gifted a fancy quill pen. That's a nice and thoughtful gesture, don't you think?

This gift symbolizes the importance of their role and their responsibilities. Many choose to keep the quill pen as a souvenir that reminds them of a crucial step in their careers.