All the glitz and glamor of Tokyo's famed Ginza district revolves around this glass cylinder. The San'ai Building occupies what may be the most prized corner of real estate in Asia. It's high profile, towering presence, and glittering neighbors make this a supernova in a sky of stars. The building's external illumination is mainly provided by light filtering through its glass facade. That is augmented by neon advertising at the top and even LEDs superimposed upon the building's glass windows.