Are Pompeii and Atlantis the same place?

No. Atlantis was a sunken city that supposedly existed;however, no concrete evidence exists to support such claims--it is simply a myth, or a legend. On the other hand, Pompeii did very much exist. It is a partially buried Roman town near Naples today. It is buried under ash and pumice, due to the eruption of Mount Vesuvius in AD 79. It was lost, then rediscovered in 1748. It is a UNESCO World Heritage Site today.