I have a front entry which is enclosed on three sides. It is about 18-20' tall, reaching up to the 2nd floor of the house and measures ~10' x 10'.

I have thought of enclosing the fourth side, but do not want to lose the esthetic of the entry.

Has anyone experience with glass, polycarbonate, or external enclosures which they have seen, installed or what not?

It would need a doorway of course as part of that 4th wall enclosure.

I think is would make the space more usable, energy efficiency for the three rooms which are currently exposed, and allow more design flexibility than current which is to simply extend the same siding as on the rest of the house.

Ideas welcome!