July 1866
The cable
The first commercially viable transatlantic telegraph cable was landed on Valentia in July 1866 and run into a station above Knightstown. The other end was at Heart's Content, Newfoundland. The first message took a few minutes; before it, a letter took eleven days. The station ran until 1966. The building is still there, and a small museum in the village tells the story without too much fuss.
385 million years ago
The tetrapod tracks
In 1993 a Swiss geology student named Iwan Stössel found a line of footprints in the Devonian rocks at Dohilla, on the north shore. They turned out to be the oldest known tracks of a four-legged vertebrate anywhere on Earth — about 385 million years old, made by an animal that crawled out of a tidal lagoon when there were no trees yet. There is a path down to them from the road. You can stand on the same rock.
From Geokaun and Bray Head
The Skellig view
Drive up Geokaun Mountain — the road is sealed, the gate has an honesty box — and the Skellig islands sit out on the horizon like two sharp teeth. The boats to Skellig Michael leave from Portmagee across the bridge, weather permitting, which it often is not. You can also walk to Bray Head at the western end of the island for the same view earned with your legs.