Stronghold/Structure

Stronghold
Strongholds are structures that occur naturally underground, and are primarily important because they house end portals. Strongholds can be located using eyes of ender. Note that any of the stone bricks in the blueprints below can be mossy stone brick, cracked stone brick, or any of their monster egg variants.

Blueprints
NOTICE:Since there is multiple exits possible, the build will show multiple variants as "Layer 2a" and "Layer 2b." "a" is for no entrance, "b" for iron doors, "c" for wooden doors, "d" for iron bars, and "e" for a plain entrance. The sides can be mixed and matched.