Jerusalem (Mount of Olives) - Eleona

The feast ranks with Easter or Epiphany, and during Encaenia they decorate the churches in the same way, and assemble each day in different holy places, as at Easter and Epiphany. On the first and second days they assemble in the Great Church, the Martyrium, on the third day in the Eleona Church on the Mount from which the Lord ascended into heaven after his passion (I mean the church which contains the cave where the Lord taught the apostles on the Mount of Olives).

(transl. Wilkinson)