Time glows inside a Nixie tube.
If you want a clock that looks like a museum piece while still retaining modern features, you need the Pramanicin Outstanding IN18 Nixie Tube Clock. This clock uses IN18 nixie tubes from PV Electronics. It is completely noise-free, comes with GPS time control and a proximity infra-red detector that tells the clock to turn on when people are in the room. Also this timepiece is durable thanks to its ½ thick aluminum plate.