Place
Göbekli Tepe
Monumental stone enclosures in southeastern Turkey, about 9600 to 8200 BCE, built by Neolithic communities.
Teomancimit, “Göbekli Tepe, Urfa”, CC BY-SA 3.0, via Wikimedia Commons
The planning and the pillars are earlier than older textbooks expected. That shows coordinated human skill. It does not, by itself, show a visiting engineer. Bashar’s catalogue lists the site in A Step Along the Way. The answer is in the recording, not in the description.