In my current lineup of components in the system, I would say that the nicest looking thing is my Naim ND 555 server or my Basis Debut turntable. I have two Isotek power conditioners that are made of aluminum that have a decent appearance too.
But, if one appreciates funky, industrial looking gear, my custom-built linestage would take pride of place. It is built on a re-cycled chassis with a very large front faceplate (something out of the 1940-50s) with large Davin control knobs for balance control.