In the 1960s and early 1970s it was fashionable among academics to identify Atlantis with Minoan Crete or Thera (Santorini) in the Aegean Sea. This Minoan hypothesis or Thera-Cretan theory was proposed in 1909 but did not attract much attention until it was popularised by three books in 1969. However, the hypothesis was criticised and arguably refuted in the late 1970s. Today there is consensus among archaeologists Atlantis never existed. This article details the background, heyday, and demise of the Minoan hypothesis, furthermore, it looks at why the Thera-Cretan theory collapsed.