Locally chosen, not algorithmic. In rough order of "if you only do one thing".
History
Bantry House & Garden
An early-18th-century mansion on a terraced site overlooking Bantry Bay, still owned by the descendants of the Earls of Bantry. The Italian-style Hundred Steps garden climbs the hill behind for the bay's best view. Inside: tapestries, Gobelins, the family's Grand Tour collection.
Good to know · On the N71 entering Bantry from Cork. April–October. Combined house and garden ticket.
Nature
Sheep's Head Way
An 88-km waymarked trail that loops the entire peninsula, broken into manageable day stages. The end loop at Tooreen — the Lighthouse Loop — is the classic: a 4km walk to a small lighthouse on the very tip, with views to Mizen, Beara and the Skelligs on a good day.
Good to know · Park at Bernie's Cupán Tae café at Tooreen, end of the road. Café open seasonally — sandwiches and tea after the walk.
Drive
Kilcrohane and Goat's Path
The Goat's Path is a single-track road that climbs over the spine of Sheep's Head between Kilcrohane and Bantry. Tight, hairpinned, and the views — straight down into Bantry Bay on one side, Dunmanus Bay on the other — are absurd. Drive it slowly.
Good to know · Narrow road. Use passing places, don't take a campervan. Eileen's pub in Kilcrohane is the destination.
Island
Whiddy Island
A flat, fertile island in Bantry Bay, two miles long, accessible by a 10-minute ferry. Site of the 1979 Betelgeuse oil tanker disaster (memorial garden on the island). Walk the loop, visit the Bank House for lunch and a pint, return on the last ferry.
Good to know · Whiddy Ferry from Bantry Pier — limited daily sailings. Check the Bank House is open before you go.
History
Kilnaruane Pillar Stone
A 9th-century carved pillar in a field above Bantry, all that remains of an early monastic site. Carvings include a panel of monks rowing a boat — possibly the earliest depiction of an Irish currach voyage and often linked to the Brendan story.
Good to know · Signposted off the N71 south of Bantry. Park on the verge, walk through the field gate.
Town
The Friday Market
Held every Friday in Wolfe Tone Square since the 18th century. Now a mix of West Cork producers (cheese, sourdough, smoked fish) and the older traditional traders. The biggest weekly outdoor market in West Cork.
Good to know · Wolfe Tone Square, Bantry. Friday mornings, year-round, weather permitting.