Palmyra and some more old architecture today…
Celebrant
A person who performs a rite
Battlement
A parapet at the top of a wall, especially of a fort or castle, that has regularly spaced squared openings for shooting through
Merlon
The solid upright section of a battlement in medieval architecture or fortifications (where you hide behind when not shooting arrows from the battlement)
Crenellation
The gap between merlons in a battlement
Triple deity
Three deities worshiped as one, like the Greek Fates