The engagement of ALICE with the public during CERN Open Days 2019

The ALICE Collaboration uses a multitude of methods to reach out to the public. Visits to the experiment, both underground during LHC shutdown and to the new ALICE exhibition, are among the most important outreach activities. During the CERN Open Days in September 2019, 4600 people visited the ALICE cavern and part of the LHC tunnel; in addition, a variety of activities were organised at LHC Point 2, bringing to children and adults the excitement of science. Talks, simple physics experiments and hands-on activities, involving building the ALICE detector out of cardboard or lego blocks, the cosmic piano and many others kept the whole family entertained. A team of few ALICE members, in collaboration with the CERN central organisers, prepared the event and trained more than 200 enthusiastic volunteers. An overview of this memorable weekend is presented here.