"Art at bottom of" can be described with various synonyms such as "artistic design at the base," "craft at the foundation," or "creative work at the bottom." These synonyms suggest that the art is an integral part of the structure or foundation, providing a unique and creative touch to the otherwise ordinary architectural element. Other synonyms could include "artistic element at the base," "decorative design at the lowest point," or "intricate detail at the foot of the structure." Regardless of the synonym used, it is clear that the art at the bottom of a structure adds depth, character, and personality to the overall design.