How about an alt right museum?
You would emphasize the HIGH CULTURE aspect of it and you would actively denigrate adherents to the inferior cultures.
In other words, you would juxtapose high culture portraits, landscapes, etc, with low culture portraits, landscapes, etc.
You would provide information of the collapse on some stone tablet sitting in front of the pictures.
You would let anybody in, provided they paid a fee, but you would have guards dressed in SS uniforms which would neutralize any wild left wing rats.