The experimental area of the Trento Proton Therapy Center (Trento, Italy) is a test-beam area devoted to research activities on particle physics sensors and biophysics. In this area particle physics sensors for medical or space applications can be tested using a proton beam with energy between 70 MeV and 230 MeV. This area is also specially suitable for education initiatives addressed to both students or general public because in this space all the elements of a complex test-beam facility are accessible to the visitors: beam transport magnets, beam monitor devices, dose measurement devices, DAQ systems, target experimental sensors and remote monitoring systems for sensors. In this publication will be presented a description of the Trento Proton Therapy Center accelerator, the experimental area and also the public success obtained there during the Trento Smart City Week 2019 initiative in September 2019.