Bubbles, lobes and filaments are listed in this study, some for the first time. This gas, with a temperature of several millions of degrees, traces episodes of intense activity in this complex region of the sky. Supernovae, stellar winds from massive stars and in particular outbursts from the central super-massif black hole of the Galaxy, Sgr A*, are mentioned in order to explain the diffuse X-ray emission detected by the European observatory XMM-Newton.