Alzheimer's Cafes Worldwide: Alzheimer's and Dementia Cafes Worldwide: come by a number of names, Memory Cafes, Alzheimer's Cafes, Dementia Cafes. In the UK many have been in existence for several years. Currently the concept is gaining momentum and hundreds of memory cafes sprouting up everywhere. The concept is to provide a social occasion, a meetup, for anyone with dementia / Alzheimer's, their care givers and family. They are informal and generally free. Activities vary.