3Pompeii, Italy

The ancient Roman town of Pompeii is perhaps the world’s most famous example of the devastation a volcanic eruption can cause.

Pompeii was a thriving Roman community when Mount Vesuvius erupted in 79 A.D. The town was completely wiped out. Other nearby towns, most famously Herculaneum, also suffered greatly. It was not until the 18th century, however, that Pompeii was rediscovered. Nowadays, it’s a major tourist attraction in the gorgeous Bay of Naples.