On 21 September, World Alzheimer's Day, declared by the World Health Organization is a day designed to raise awareness of the disease and its effects on society. It is a day that is intended mainly to social awareness. In Fundació ACE we want to present not only the disease but also our projects, what we are doing about it. ACE is one of the entities with more seniority in Barcelona dedicated to the treatment of people with Alzheimer's. So, we celebrate, among other things, by making an Open Day for early diagnosis of the disease. But this is not a once in a lifetime chance: all over the year we are still working to help people suffering from Alzheimer's disease or other dementias. Therefore, since 2008, these Open Days take place once a month at the Diagnostic Unit of Fundació ACE. During this day, users who have previously registered access to a free review of memory. This is a neuropsychological battery that will help to know the status of their cognitive abilities.