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

Bodie, California

Image: Michael & Diane Weidner's profile Michael & Diane Weidner

Once a booming Gold Rush town in the late 1800s, Bodie now sits frozen in time. Visitors wander through dusty streets past old saloons and storefronts that look as if their owners just stepped out for lunch… a century ago. Locals whisper about strange sounds and ghostly piano music. And here’s a fun superstition: take anything home, even a pebble, and bad luck might just hitch a ride with you.

2

Bonaventure Cemetery, Savannah, Georgia

Image: Alla Kemelmakher

This is Southern Gothic at its finest. Towering oaks drip with Spanish moss over winding paths and Victorian monuments. Some visitors claim to have seen a little girl in a dress near a certain marble statue, while others swear they’ve heard distant laughter or the sound of dogs barking. Even if you never meet a ghost, the beauty of this historic cemetery will linger with you.

3

Crescent Hotel, Eureka Springs, Arkansas

Image: Nick Elmer

Often called "America’s most haunted hotel," it’s also one of the prettiest in the Ozarks. Over its long history, it’s been a resort, a college, and even a so-called cancer hospital. Guests today report friendly phantom encounters, from a Victorian gentleman strolling the halls to a playful little girl. Whether you meet the staff or the "extra" guests, you’ll get a good story out of your stay.

4

Dock Street Theatre, Charleston, South Carolina

Image: Brittani Burns

Charleston is rich in history, and this theater is a key part of its story. The stage has witnessed centuries of performers, fires, and renovations. Visitors sometimes report seeing a woman in a red gown gliding across the balcony, while others hear faint footsteps backstage when no one is there. Even if you don’t believe in ghosts, the building’s charm might still sweep you off your feet.

5

The Driskill, Austin, Texas

Image: Matthew Smith

This stately hotel has been greeting travelers since 1886, and some say its original owner never checked out. Guests report flickering lights, strange scents, and the occasional sighting of a figure in old-fashioned clothing. With its grand lobby and polished brass, you might just forget you came for ghost stories and stay for the atmosphere.

6

Honolulu International Airport, Hawaii

Image: Pascal Meier

Not every haunted spot is old and creaky, you know? At this busy airport, passersby tell of a "lady in waiting" seen in off-limits areas, said to be searching for a long-lost love. A few travelers have even reported toilets flushing on their own or paper rolls unraveling without help. We can say mystery flies around here!

7

Hotel Monte Vista, Flagstaff, Arizona

Image: Jacob

This historic hotel has welcomed movie stars and musicians, but it’s the uninvited guests that make it famous. From mysterious phone calls to the sound of a baby crying in an empty hallway, there’s never a dull moment. One legendary long-term boarder even hung raw meat from a chandelier—a story the staff still tells with a grin.

8

Lincoln Park Zoo, Chicago, Illinois

Image: Deborah L Carlson

A zoo might not seem spooky, but this one was built atop an old cemetery. Not all of the bodies were moved, and over the years, visitors have reported spotting mysterious figures or feeling sudden chills. Still, the zoo’s lush gardens and animal exhibits make it a must-see—haunted or not.

9

The Mark Twain House, Hartford, Connecticut

Image: Jessica Furtney

This handsome Victorian home is where Mark Twain penned some of his most beloved works. Visitors have reported faint traces of cigar smoke in the billiard room, even though smoking ended long ago. Others claim to have seen a lady in white near the stairwell. History buffs will appreciate the house’s charm, ghost or no ghost.

10

Pittock Mansion, Portland, Oregon

Image: Sean Benesh

Built by a wealthy couple with big dreams, this mansion boasts sweeping views and fine craftsmanship. Sadly, the owners lived there for only a few years before passing away. Tour guides say the scent of roses sometimes fills the air when no flowers are in sight, and a certain painting is said to move on its own.

11

St. Augustine Lighthouse, Florida

Image: Evgeni Tcherkasski

Perched on the coast, this lighthouse has been guiding ships since the 1800s. Some visitors report hearing the giggles of children playing or catching sight of a figure high in the tower. Even without the ghost tales, the view from the top is worth every step.

12

Trans-Allegheny Lunatic Asylum, Weston, West Virginia

Image: Andy Li

With its massive stone walls and sprawling grounds, this former asylum looks straight out of a movie set. Once home to thousands of patients, it’s now a historic site where tour guides share both medical history and lighthearted ghost tales. Maybe you’re in it for the architecture, or maybe it’s the stories. Whatever draws you in, it’s a fascinating place to explore.

1

Empire State Building

Image: Afif Ramdhasuma

We’ll begin with what’s perhaps the most famous skyscraper in "The City That Never Sleeps". The Empire State Building speaks to the magnificence and grandeur of New York City: After all, it is named after the State of New York’s official nickname, "The Empire State".

At the time of its construction, the Empire State Building was the tallest building in the world, a title held for almost 40 years. Its exquisite Art Deco design and innovative architecture have turned it into an instantly recognizable icon. Perhaps more famously, it has been featured in unforgettable pictures like "Sleepless in Seattle" and "King Kong". Be honest: Whenever you see a picture of this building, can’t you almost see a humongous ape perched atop its antenna?

2

Flatiron Building

Image: Vidar Nordli-Mathisen

For many, the most remarkable feature of this iconic building is its unusual name, which comes from its also rather unusual shape. The Flatiron is considered a New York City institution, and its history is almost as inspiring as its groundbreaking design.

In its early years, the Flatiron was known by the derisive nickname "Burnham's Folly", since detractors believed that architect Daniel Burnham’s design was a laughable idea. History would prove Burnham right though, since the Flatiron is still one of the most instantly recognizable skyscrapers in the world.

3

Willis Tower

Image: Gardhy Granados

For any Chicagoan who might be reading this, we know that you probably still call this building the "Sears Tower", but we thought it would be appropriate to include the official new name of this iconic skyscraper. Located in the heart of the "Loop", the Willis Tower is a 110-story, 1,451-foot building that has truly earned its place in Chicago’s skyline.

Since its opening in 1973, Willis Tower has proudly held the title of the world’s tallest building for close to 25 years. Regardless, this juggernaut is still an American landmark and one of Chicago’s most visited tourist attractions.

4

Transamerica Pyramid

Image: Chris Leipelt

While most pictures of San Francisco’s skyline are usually dominated by the Golden Gate Bridge, visitors of "The City by the Bay" are frequently dazzled by this unusual yet breathtaking building. Completed in 1972, the Transamerica Pyramid was San Francisco’s tallest building until 2018, when it was surpassed by the Salesforce Tower.

Without a doubt, the most striking aspect of this building is its groundbreaking design: Just like San Francisco’s carefree spirit of independence, this building seems effortlessly innovative. It has been compared to other revolutionary designs, most notably to "the Shard" building in London.

5

Columbia Center

Image: Anthony Alexander

Formerly known as "the Bank of America Tower" (or BOAT for short), the Columbia Center was constructed in downtown Seattle in the early ‘80s: At the time, this imposing black skyscraper was the highest building on the West Coast. While most of this skyscraper is leased for private usage, it does house the highest public viewing area west of the Mississippi River.

The Columbia Center’s design produces a rather interesting effect: Since the building is composed of 3 separate segments joined by 2 setbacks, viewers from the street might believe the Columbia Center is made from 3 different towers set side to side.

6

The Chrysler Building

Image: Anthony Fomin

As you probably expected, many iconic skyscrapers from "The City That Never Sleeps" will be featured in this article. The Chrysler Building is an art-deco masterpiece located at the intersection of 42nd Street and Lexington Avenue, which holds the distinction of being the world’s very first supertall skyscraper.

This building was commissioned by (and named after) Walter Chrysler, head of the Chrysler Corporation, and its construction was marked by a friendly competition with the Empire State Building for the title of the world’s tallest building. In that sense, the Chrysler Building’s remarkable 1,046 feet height gave it this impressive title, albeit only for 11 months.

7

Wells Fargo Plaza

Image: Franky Magana

If you ever find yourself taking a stroll through Downtown Houston, you’ll definitely come across a gorgeous all-glass skyscraper. You can’t miss it: After all, the Wells Fargo Plaza is the tallest all-glass building in the entire Western Hemisphere, standing at an impressive 992 feet.

This skyscraper was formerly known as the Allied Bank Plaza and in, 1988, it was renamed to the First Interstate Bank Plaza. However, when in 1996 First Interstate Bancorp was bought by Wells Fargo, this skyscraper changed its name once again to the Wells Fargo Plaza we all know.

8

John Hancock Center

Image: Jonathan J. Castellon

Founding Father John Hancock truly deserves all the praise it can receive from the American people, so it stands to reason that he should have his name honored by a 1,128-foot supertall skyscraper. Located in the iconic "Magnificent Mile", the John Hancock Center was for a while the tallest building in Chicago, surpassed by the previously mentioned Willis Tower.

This skyscraper was completed in 1969 and it has remained a Chicago staple ever since. It houses several restaurants and offices, as well as approximately 700 condominiums. Interestingly, the John Hancock Center is the background on which the 1988 horror film "Poltergeist III" takes place: Posters for this film featured this skyscraper, with a menacing lighting bolt crossing the night sky behind it.

9

Bank of America Plaza

Image: Luis Negron

Just like the Empire State and the Chrysler buildings, the Bank of America Plaza is another wonderful example of Art Deco architecture located between Midtown and Downtown Atlanta. This gorgeous skyscraper is instantly recognizable thanks to its unusual color palette, and it holds the distinction of being the tallest building of any U.S. state capital.

If you are lucky enough to visit "the City in a Forest", try to visit the Bank of America Plaza at night. You’ll quickly notice that the stunning golden spire at the top of the building (which is actually shaped like the Plaza itself) glows alongside a gorgeous pyramid of girders, in a lovely orange hue that tries to resemble old street lights.

10

Home Insurance Building

Image: Александр Македонский

We’ll end this article by honoring an iconic skyscraper that, while it is not still standing, lives on in the proud history of our country. Standing at 138 feet, the Home Insurance Building might not seem remarkably tall by today's standards but, at the time of its construction in 1885, this Chicago historical landmark became the world’s very first skyscraper.

Due to a decrease in its occupancy, the Home Insurance Building was demolished in 1931, alongside 5 other buildings, to make way for the site on which the Field Building now stands. However, this landmark’s legacy still stands, earning its well-deserved place in history as the father of the skyscraper.