Ray is richer than many other ancient cities in the number of its historical monuments, among which one might refer to the 3000-year-old Gebri castle, the 5000-year-old Cheshmeh Ali hill, the 1000-year-old Bibi Shahr Banoo tomb and Shah Abbasi caravanserai.
Nekateri zgodovinarji pripisujejo stavbe starodavnim mitološkim monarhom, nekateri drugi menijo, da je bil Raj sedež dinastije zoroastrskega voditelja.