The US photographer Nicholas Nixon has taken a portrait of his wife BeBe and her three siblings every year since 1974, making us confront the passing of time, family ties and our own mortality. Read and see more in The Guardian.
Art in public spaces enriches our lives in various ways, in many places. It can send important messages to the community, make people more aware the environment, and let them see it in a different way. See all the images at The Big Picture.