Trieste / Challenger Deep descents belongs to the Common Era — dated here to c. 1960 CE at Mariana Trench. Dates mark a scholarly centre of gravity (dedication, completion, or iconic phase), not a single foundation day.
Humans reached the ocean’s deepest point — a pressure vessel wonder as extreme as spaceflight.
How it amazes the brain
Bathyscaphe Trieste; later limus and deep-submersibles continue the line.
Why it counts as a wonder
It never needed a contest ballot to scramble the brain: scale, craft, or sheer improbability is enough.
We know less of the deep than of the Moon — each descent re-amazes.
On dating
CE means years after the traditional birth of Christ. A monument listed as c. 1960 CE may have been founded earlier, rebuilt later, or become famous only in one phase. Engineering wonders (dams, tunnels, orbiting labs) are dated to opening or assembly.
This is story 96 of 100 in The Trend Ledger’s illustrated desk on world wonders raised after the birth of Christ — the companions to our BCE series.