https://en.wikipedia.org/wiki/Hyperart_Thomasson
refers to a useless relic or structure that has been preserved as part of a building or the built environment, which has become a piece of art in itself. These objects, although having the appearance of pieces of conceptual art, were not created to be viewed as such. Akasegawa deemed them even more art-like than art itself, and named them "hyperart." In recent years there has been a resurgence of interest in Thomasson, especially since the publication of Akasegawa's work on the subject in English in 2010
. . .
The term Thomasson comes from the professional baseball player Gary Thomasson, who was signed by the Yomiuri Giants for a record-breaking sum of money, and spent his final two seasons with the team (1981–1982) coming close to setting the league strikeout record before being benched.[2] Akasegawa viewed Thomasson's useless position on the team as a fitting analogy for "an object, part of a building, that was maintained in good condition, but with no purpose, to the point of becoming a work of art.
(h/t 99% Invisible site). Although I got it from their book