Paul Devereaux, as a part of his work in consciousness and archaeology, enlisted two dozen volunteers to sleep in three reputed "sacred sites" in England and Wales. Each brought along another volunteer to awaken them during rapid eye movement sleep and request a dream report. These reports were compared with those obtained while the participants were at their homes, sleeping in their familiar beds. Significant differences were observed when both sets of dream reports were subjected to content analysis. Future research needs to incorporate a third setting into the study, namely a group of "control sacred sites," locations the participants are told to have been visited over the centuries because of their reputed healing and visionary qualities but, in actuality, lack any such record.
Krippner, Stanley, "Dreaming in Sacred Sites: A Content Analysis of Dream Reports" (2016). Embrace of the Earth 2016. 12.