To be very outrageous, a school, which gathered wizards, philosopher, scientist, mathematician and artists. It teaches students all these subjects and get them know the world from small quantum particles to the majestic universe.
Or a museum of imaginary instruments which fakes the history. Inspiration: http://imaginaryinstruments.org
Mid: a cabinet of wonders. Several instruments that constitute a room of shelf of curiosities.
Small: a fine-polished instrument that could be put on the shelf as products.