Probably the porch of the “House of the Forest.” Porches of columns immediately in front of columnar chambers were a favorite feature of Persian architecture. The whole verse should be translated, “And he made the porch of the pillars in length 50 cubits, and in breadth 30 cubits, and a porch before them (i. e., the pillars), and pillars, and a base (or step) before them.” Most of the Persepolitan porches had small pillared chambers at some little distance in front of them.
Related Commentaries of 1 Kings 7:6
1 Kings 7:6
6 And he made a porch of pillars; the length thereof was fifty cubits, and the breadth thereof thirty cubits: and the porch was before them: and the other pillarsc and the thick beam were before them.d