Locally chosen, not algorithmic. In rough order of "if you only do one thing".
History
Poulnabrone Dolmen
A 5,800-year-old portal tomb — older than the Pyramids — sitting on a slab of limestone pavement off the R480. The remains of at least 33 people have been found here. The dolmen's silhouette against the Burren sky is one of the most photographed images in Ireland.
Good to know · Free, always open. Small car park signposted off the R480. Stay on the path — the surrounding pavement is fragile.
Nature
Burren National Park
1,500 hectares of karst, hazel scrub and turlough (vanishing lake) at Mullaghmore mountain — the eastern Burren. Several waymarked walking routes from a free car park. The Mullaghmore loop walk is the headline — a circuit of the eerily layered limestone hill.
Good to know · Free park, free car park near Corofin. Information point in Corofin village. Best in spring for the orchids and gentians.
Nature
Aillwee Cave
A horizontal cave system opened by farmer Jacko McGann in 1944 when he chased a dog into a hole. Stalactites, an underground waterfall, the bones of brown bears that hibernated here 10,000 years ago. The Birds of Prey Centre alongside flies eagles and owls daily in season.
Good to know · Off the R480 near Ballyvaughan. Open daily. Combined cave + birds ticket. Allow 2 hours.
Town
Ballyvaughan
A small fishing village on Galway Bay at the northern edge of the Burren. The 19th-century pier, Monks pub on the harbour, and An Fear Gorta tea-room (in a 19th-century cottage) are the destinations. The Burren Smokehouse in Lisdoonvarna and Burren Free Range pork have made the area a serious slow-food region.
Good to know · Free parking on the pier. Most facilities concentrated on the central junction.
Town
Lisdoonvarna
The country's last spa town — sulphur and iron springs at the Spa Wells beside the river. Famous for the Matchmaking Festival every September, founded in the 1800s as a post-harvest meeting for farmers and now Europe's largest singles festival. Willie Daly — fifth-generation matchmaker — holds court at The Matchmaker Bar with his leather-bound book of lonely hearts; touch it with both hands and you're meant to be married within six months. The Burren Smokehouse and the Roadside Tavern (with the in-house Burren Brewery) are the year-round draws.
Good to know · Pay-and-display on Main Square. Spa Wells partly open seasonally.
Nature
The spring gentian — the flower that brought a king
Gentiana verna — a tiny, electric-blue alpine flower that grows wild on the Burren limestone and almost nowhere else in Ireland or Britain. It's the flower that drew Charles here as Prince of Wales in May 2002, and again as King in 2024 — he's a long-standing patron of the Burrenbeo Trust. Most visitors walk straight past it; once you've seen the colour, you don't again. Look low, in the cracks of the pavement.
Good to know · Bloom window is roughly mid-April to early June, peak in May. Best seen in Burren National Park (Mullaghmore loop) and around Mullach Mór. Don't pick — it's protected.
History
Corcomroe Abbey
A roofless 13th-century Cistercian abbey set in a karst valley below Abbey Hill. The carved tomb of King Conor O'Brien (died 1267) is inside. WB Yeats set his play 'The Dreaming of the Bones' here. Often empty, always atmospheric.
Good to know · Signposted off the N67 north of Bell Harbour. Free, always open. No facilities.