This Piper Halliwell photo contains
conservatory, hothouse, and indoor garden.
There might also be
restaurant, eating house, eating place, eatery, sun parlor, sun parlour, sun porch, sunporch, sunroom, sun lounge, solarium, and morning room.
Piper ends up in a mental institution after The Source brain washes her and tricks her into surrendering the Power of 3. It's up to Phoebe and Paige to prevent The Source from destroying them all.