Castle Town Watchtower
The Castle Town Watchtower is a location found in Breath of the Wild.
The Castle Town Watchtower is located within East Castle Town, just southeast of Hyrule Castle. The area is surrounded by dangerous Guardian Stalkers that are just outside the perimeter of the guard wall. On the ground floor of the perimeter wall tower, just to the northeast, Link will find a treasure chest with a Knight's Shield.
At the very top of flapole that is in the area, Link can examine the sparkling leaves to find a Korok Seed. A second Korok can be found just south of the flagpole, underneath a metal door that can be moved with Magnesis.
Nearby Korok Seeds
Climb to the top of the flagpole and examine the fairy lights.
Lift the metal door, and the stone under it.