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ISOLDE stands for the Isotope Separator On-Line DEvice \cite{Jonson2000}. Based on a technique originally developed in Sweden in the 1960s, ISOLDE was quickly identified as a high-potential facility for nuclear research and its construction at CERN was approved in 1964 and the first radioactive ions were delivered to experiments in 1967. The idea behind ISOLDE is the same as in any sorting facility: starting from a mixtures of elements, pick out the one of interest out of the others to deliver it to an experiment. But when you are searching for a needle in a haystack which sometimes only survives for a few 100 ms, the challenge is extreme. And everyone knows that the best way to get the needle out of the haystack is with a powerful magnet! Thus goes ISOLDE through several steps: the production of radioactive isotopes by the irradiation of different materials with CERN's low-energy proton beam, followed by the ionisation of the radioactive recoils through which some chemical selection can be performed, and then the separation of the mono-energetic ion beam through a constant magnetic field for mass selection. These fundamental concepts allow already to display the importance that some basic scientific concepts, within grasps of a young audience, can have on advanced machinery, such as the chemical differences between alkali elements, refractory elements, metals or noble gases, or such as the path followed by a charged particle in a magnetic field.  ISOLDE (shown in Fig.~\ref{fig:isolde})hosts Fig.~\ref{fig:isolde}) hosts  today a set of permanent experiments, which can be readily approached \footnote{Access to some parts may be restricted at times to account for safety concerns.}. Those different experiments aim at studying some of the aspects highlighting earlier, such as the nature of the strong force, nuclear properties and reactions of interest for stellar evolution, but also as probe to characterise new materials or to support novel medical research. Such a rich and diverse experimental programme, with close to 50 different experiments scheduled each year between Easter and Thanksgiving, enables to address many disciplines and interest a variety of communities of more than 700 users spread across 17 member states\footnote{Belgium, Denmark, Finland, France, Germany, Greece, India, Ireland, Italy, Norway, Poland, Romania, Slovakia, South Africa, Spain, Sweden and the United Kingdom.} and beyond \cite{Borge2016}. \textbf{Thomas - 19th January}  %General overview of the ISOLDE visits and the target audience\\