11 “Modern” Inventions That Were Actually Used in Ancient Times
We often think of technology as modern, but many inventions we use today actually have roots in ancient times. Some tools and ideas were so advanced that they wouldn’t feel out of place in today’s world. These forgotten creations prove our ancestors were far more inventive than we give them credit for.
- Tricia Quitales
- 3 min read

Many of the gadgets and systems we rely on today seem like recent breakthroughs, but ancient civilizations were already thinking ahead. From automatic doors to early versions of computers, they built surprising things with the tools they had. Their creativity and engineering shaped the future more than we realize. Take a look at 11 “modern” inventions that were already being used thousands of years ago.
1. Automatic Doors
Louis Comfort Tiffany / Tiffany Studios on Wikimedia
In ancient Alexandria, inventor Heron created temple doors that opened using steam pressure. When worshippers lit a fire, the heat moved a system of weights and pulleys. It was a clever mix of science and showmanship.
2. Concrete
Matteo Mazza on Pexels
The Romans used a version of concrete that still holds strong today. Their mix included volcanic ash, which made it incredibly durable. Many Roman structures still stand because of this smart material.
3. Central Heating
Immanuel Giel on Wikimedia
Over 2,000 years ago, the Romans used a heating system called the hypocaust. Hot air from a furnace traveled under floors and through walls to warm buildings. This system is surprisingly similar to today’s underfloor heating.
4. Seismograph
photographer not named at web source on Wikimedia
In the year 132 AD, Chinese inventor Zhang Heng made the first earthquake detector. His device used a ball that dropped from a dragon’s mouth to show the direction of an earthquake. It couldn’t measure strength, but it showed impressive understanding.
5. Batteries
Eva Bronzini on Pexels
The “Baghdad Battery,” found in Iraq, dates back to around 200 BC. It looks like a clay jar with metal pieces inside and may have been used to produce a small electric charge. While the purpose is debated, it shows ancient knowledge of energy.
6. Toilets and Plumbing
tyler hendy on Pexels
Ancient civilizations, such as the Indus Valley and the Romans, had running water and drainage systems. Some homes had private toilets that flushed with water. Their plumbing systems were smarter than you might expect.
7. Vending Machines
Abdullah Ghatasheh on Pexels
Heron of Alexandria also invented a vending machine that dispensed holy water. You’d drop in a coin, and the weight would trigger a lever to release a small amount. It worked on simple mechanics and surprised many visitors.
8. Alarm Clocks
Ekaterina Astakhova on pexels
The ancient Greeks made alarm clocks powered by water. When the water reached a certain level, it triggered a sound to wake someone up. It’s a creative idea that worked long before electricity.
9. Prosthetic Limbs
Engin Akyurt on Pexels
There is evidence that ancient Egyptians and Romans used prosthetic body parts. One of the oldest is a wooden toe found on a mummy. These early devices helped people live more normal lives.
10. Crane Machines
Hendrik Willem Van Loon on Wikimedia
Ancient Greeks used crane-like devices for building large structures. They used ropes, pulleys, and manpower to lift heavy stones into place. These machines laid the groundwork for today’s construction tools.
11. Maps and Navigation Tools
FlorinCB on Wikimedia
Ancient sailors used tools like the astrolabe to measure stars and find their way. Detailed maps were also created by cultures like the Babylonians and Greeks. Navigation was an art long before GPS came along.