The Hypogeum Hal Saflieni Sounds

The Hypogeum Hal Saflieni temple in Malta is a prehistoric temple, dating back to 5,000 years ago. It’s also one of the largest underground temples from the Bronze Age. To date, no one knows what the temple was used for, but it’s assumed it was a sanctuary for an oracle or a necropolis. So far, they’ve found over 7,000 bodies interred down there.

Even more mysteriously creepy, are the acoustic properties of the temple. It’s built like a giant bell, so sounds are amplified throughout the entire structure.