When Czech history meets modern technology

25-09-2025

From September 18 – 29, 2025, you can see the Czech Crown Jewels at Prague Castle and right next to them, our COMET data logger. It monitors temperature and humidity to keep the jewels in perfect condition. Meet COMET in a truly unique place! 

Official event page https://www.hrad.cz/en/prague-castle-for-visitors/other/the-bohemian-crown-jewels-10273