Sun Tower is a room in the Chozo Ruins in Metroid Prime. It is a very tall tower with a more open area at both top and bottom, each of which has an exit. At the bottom, some Chozo Lore can be found on the right wall from the lower door, and War Wasps attack anything that enters. A Spider Ball Track goes up one of the walls; to use this, Samus must first scan four symbols around the lower room, 2 of which are behind Cordite seals, and 2 others that can be found behind two of the four pillars. It is one of the northernmost rooms in the game (along with Transport to Magmoor Caverns North and Transport Access North).
The Artifact of Wild can be obtained early by reloading Sun Tower Access. This can be done by dropping on an Oculus in Morph Ball form from the top of the shaft, and then using Bombs to go back up the shaft.