Parashas Vayeitzei · Passuk 28:17
And he was afraid and said, “How awesome is this place! This is none other than the house of God, and this is the gate of heaven.”
Torah Temimah points to classical midrashic identification of the site.
TT lemma: שער השמים.
English: Rabbi Abbahu said: This is the gate through which the prayers ascend to heaven.
Derash on the verse (midrashic) — not a formal named middah of the 13. The phrase is taken to identify the site as the unique conduit of prayer.
The place Yaakov recognized is the gate through which prayers ascend to heaven — the future site of the Beis HaMikdash.