Beaghmore Stone Circles lie about 15 kilometres northwest of Cookstown on the slopes of the Sperrin Mountains, one of the most significant prehistoric complexes in Ireland. The site consists of seven stone circles — paired in three sets of two plus one — along with twelve stone alignments and a number of round cairns. The circles and alignments date to the Bronze Age, roughly 2000–1500 BC, and were built on an axis that aligns with sunrise at midsummer.
The site is free to visit and rarely crowded, even in summer. The open bogland setting, with the Sperrins rising behind, is atmospheric. A boardwalk path crosses the site and allows close inspection of all the main features. The small visitor information board explains what is known of the site's purpose, which is less than most people hope — the stone circles remain largely mysterious.