Leonardo da Vinci had a vision for a helicopter 400 years before it was made. Click to read the full fact.
The post WTF Fun Fact 12713 – da Vinci’s “Helicopter” appeared first on WTF Fun Facts.
Leonardo da Vinci had a vision for a helicopter 400 years before it was made. Click to read the full fact.
The post WTF Fun Fact 12713 – da Vinci’s “Helicopter” appeared first on WTF Fun Facts.