Grand Windchamber

Grand Windchamber is a room in the Temple Grounds, containing the Sunburst.

Alternative Item Collection Methods
A double bomb space jump can be used on the GFMC Compound side to reach a ledge. From there, you can screw attack to Sunburst.

From the GFMC Compound side, you can dash jump to the portal. This can be useful if you don't have Super Missiles or Screw Attack, and want to collect the items in Grand Windchamber or Windchamber Gateway. An easy way to get back is to jump off of the area where you get Sunburst.