The YMCA of Greater Boston is dedicated to improving the health of mind, body, and spirit of individuals and families in our communities. We welcome men and women, boys and girls of all incomes, faiths and cultures. The Oak Square YMCA serves Allston-Brighton, Watertown, Brookline, and surrounding neighborhoods, and was renovated in 2001. The universal design of this facility ensures that it is accessible for all. Today, the YMCA is one of the communitys leading social service providers. Volunteer Opportunities Visit our website for more information about Oak Square YMCA.