Come and play the classic game "Guess Who?" but with the fundamental particles described by the Standard Model of particle physics.

Ride, run, or row along with live action videos on Kinomap. Have a virtual bike ride through the LHC during the CERN Open Days. Try to break the speed record or be faster than your friends or family.

Let your imagination run wild constructing parts of the CMS detector with Kapla wooden blocks.

Go inside the LHC-tunnel simulator, the place where new CERN staff learn the safety procedures for underground emergency evacuation.

Become an operator of your own table-top accelerator. Try to inject, accelerate and keep a steel ball circulating at "high energy". You can either rely on full automation of the machine or observe it and try to control it yourself manually like a professional CERN operator. Will you reach the incredible 0.000 001 % of the speed of light? It's all in your hands!

Learn how to use an orienteering map and a compass and test your navigational skills with short orienteering circuits.

Come and explore CERN's particle accelerators through high-resolution 360° panoramic photos. With presentations throughout the day, we will guide you through several key areas in the accelerators. Questions are welcome. Feel free to roam using one of our workstations if you'd rather explore on your own.

Take a short quiz to find out which elementary particle fits your personality best. After the quiz, you can collect a pin with your particle and compare your particle personality with others.

Take a short quiz to find out which elementary particle fits your personality best. After the quiz, you can collect a pin with your particle and compare your particle personality with others.

Take a short quiz to find out which elementary particle fits your personality best. After the quiz, you can collect a pin with your particle and compare your particle personality with others.