Giant Column

The are structures in.

History
The five Giant Columns were created by the Sheikah alongside the Guardians to aid the battle against Calamity Ganon during the events of the first Great Calamity. Their purpose was to contain Guardians and would automatically emerge from below Hyrule Castle upon Calamity Ganon's return to Hyrule.

When Calamity Ganon returned during the events of the second Great Calamity, he took over the columns and presumably all Guardians within them. They have since remained visible above ground around Hyrule Castle in a pentagon-shaped formation.

Features and Overview
Being structures built by the Sheikah, they have a similar appearance to the Sheikah's other creations, such as Ancient Shrines and Sheikah Towers. As such, their surfaces are not naturally scalable by Link, though it is possible to climb them using the portruding patterns as makeshift platforms. At the top of each column lies a broken-down Guardian, which all yield an Ancient Material upon examination.