An international team of scientists and military personnel travel to an ancient alien city in the Pegasus Galaxy and explore a new stargate network.
See also: Stargate, SG-1, Continuum, & Universe.
John sits in the park considering the offer to travel to Atlantis in episode 1x01 "Rising".
From episode 1x06 "Poisoning the Well".
Terminal City Iron Works can be seen as the destroyed city in S3E4 episode Sateda where Ronan is hunted by the Wraith. From episode 3x04 "Sateda".
The hospital where Rodney and his sister were held in episode 4x09 "Miller's Crossing".
From episode 3x06 "The Real World".
From episode 3x13 "Irresponsible".