Breath of the Wild
The Hyrule Cathedral is located just southeast of Hyrule Castle at the northeast end of the Hyrule Castle Town Ruins. The cathedral has been almost completely demolished, with only a few ruins left standings. The area is patrolled by a dangerous Guardian Stalker.
Near the center of the area, there are a pile of leaves that can be removed with a sword. Lift the rock underneath the leaf pile to find a Korok. At the northeast part of the area, at the ground level of the guard tower, there is a treasure chest with five Bomb Arrows.
Nearby Korok Seeds
Destroy the leaves and pick up the rock.
Tears of the Kingdom
The Cathedral is found at the northeast end of the Hyrule Castle Town Ruins. It is a fairly empty area, with a few wooden crates laying around. The main attraction is the Hyrule Castle Town Ruins Well, located just to the south, which has some enemy Horriblin there, as well as a chest with a Knight's Halberd.
Just north of the Hyrule Castle Town Ruins Well, there is a treasure chest half buried in the ground. Link can pull it up with Ultrahand to get a Blue Rupee. Another chest is buried just east of the well, which contains a Green Rupee.
- At the east end of the Cathedral, there is an overturned log and on the inside is a jar. Break the jar to get a Korok to appear.