This is a wall piece. Due to it's dimensions and weight, it should be placed with screw bushings and screws.This piece structure is robust, but - when it isn't on the wall  - it should be placed horizontaly on the ground, using its iron frame as a base. 
In terms of installation, it should be placed in the wall with its center at the level of viewers eyes and should be near a natural or not natural light, so it reveals the carved image hidden in frontal view.