The best-supported answer is that the famous Temple of Artemis at Ephesus was built in the mid‑6th century BCE, with construction beginning around 560–550 BCE and continuing for several decades into the 6th century BCE.

Quick Scoop: Key Dates

  • An earlier, simpler sanctuary existed before the grand monument, but it was destroyed by flooding in the 7th century BCE.
  • The great marble temple usually meant by “Temple of Artemis” was started around 560–550 BCE, under the Lydian king Croesus and architect Chersiphron (and his son Metagenes). It was largely completed later in the 6th century BCE.
  • This version stood until it was destroyed by arson in 356 BCE, then rebuilt again in the 4th century BCE.

So, when someone asks “when was the Temple of Artemis built?” , they’re usually referring to that wonder‑of‑the‑world phase, begun around 550 BCE and completed over the following decades in the 6th century BCE.

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