The outdoor cafe where Sam meets Harry is in the UBC Robson Square, in front of the Vancouver Art Gallery. The bronze statue, Bird of Spring, can be seen in the background. Sam and Jack walk past the same statue in Politics (1998). In both cases, this area stands in for Washington, DC.
The SGC must have upgraded the exterior entrances after this as, while disguised as Daniel, Sam just lifts the hatch to climb into the access chamber; but later, in Proving Ground (2001), there are keypads and deadly gas protecting the entrances.