Does anyone know what a thomasson is? Let me explain.

Wikipedia would describe a thomasson is a useless structure or relic that has been preserved as part of a building or environment that has become a sort of piece of art in itself. Examples would include some stairs that mysteriously go nowhere, a gate without a fence, an old now unused telephone pole standing free on its own, etc. On object that has the appearance of conceptual art even though they were not originally created to be such.