The Lesser Propylaea, built in the middle of the 1st century BC by Appius Claudius Pulcher and his nephews, acts as a northern gate to the inner area of the sanctuary. Its frieze is made of triglyphs and metopes. The whole structure consisted mainly of two parrallel walls with attached Ionic columns. The interior passageway was divided by two interior walls. The inner facade had two colossal Caryatids holding kistai (the containers which held the Hiera in the sacred processions of the Mysteries). Lesser Propylaea and processional way Detail from Lesser Propylaea (grain, kistai) Lesser Propylaea and Plutonion from above