Stolpersteine are golden coloured squares about the size of a kitchen tile inserted into the pavement to mark the last known address of someone who was torn away by Nazi persecution. They are obvious when you see them and have a name , dates and reason engraved in. They are a quiet , deeply moving way to remember who might have been had history not taken over. Seeing them in amongst dashing around "doing sights" is very moving and adds greatly to the other large official remembrances.