מלכים א ז:ב פירוש: רש״י

The house of the Forest of Lebanon. [Targum] Yonoson translated, “a house for the cooling of kings.”²Alternatively, it is called “the house of the forest” because the house was constructed with many wooden pillars which gave it an appearance of a forest; or the house was actually located in the forest of Levanon.—Metzudas Dovid.

And cut beams of cedar. Beams of cedar were along the length of the house. There was a row of columns on the ground and the cut beams from column to column.