This analysis is concerned with the dating of megaliths in Europe and is based on 2410 available radiocarbon results from pre-megalithic and megalithic sites, and to the megaliths contemporaneous contexts and the application of a Bayesian statistical framework. It is, so far, the largest existing attempt to establish a supra-regional synthesis on the emergence and development of megaliths in Europe. Its aim is to assist in the clarification of an over 200-year-old, ongoing research debate.