The book New Aging challenges how we think about designing spaces for the elderly. Architect Matthias Hollwich, who has an architectural firm in New York and works with students at the University of Pennsylvania, "discovered through practice and personal experience, designing buildings and cities to better accommodate the eldest among us helps us all by creating communities that are more socially connected and accessible."
You can find out more about New Aging in the article, "Aging Gracefully: How a New Architecture for Old Age Helps Everyone".