Experts use underwater archaeology to see the world's oldest sunken city.
The Pantheon is a 2,000-year-old temple with a secret.
King Midas and his golden touch is a famous tale in Greek mythology.
Venice was once a fearsome superpower. Scientists use pioneering acoustic imaging technology to discover its ancient foundations and reveal how it's still standing.
The Tower of London is shrouded in a mysterious, grisly past.
A prehistoric megastructure could reveal lost mysteries of the Bronze Age.
Experts explore the tunnels hidden below an Egyptian pyramid.
How were the most iconic buildings of the ancient worlds built?