The 20 Craziest Ancient Inventions & Discoveries

While we're busy making big advancements in technology, such as creating self-driving cars and new AI systems, we often forget that it all started from humble beginnings. Being the first civilization to invent the wheel or pen might not sound like much, but don't forget we wouldn't be here today without these first discoveries. And considering the era they were built in, these 20 crazy ancient inventions are truly remarkable and showcase intelligence way beyond their time.