The Caves of Hercules

The so-called Caves of Hercules are a palimpsest offering insight into the many different eras of Toledo's history. First built as part of the Roman water network, the site might have also been a temple, while it also became an early church under the Visigoths. Later, there is some evidence suggesting the mysterious site was used for Islamic religious ceremonies. Today's it's a rare window onto the past, cutting through 2,000 years of history.