puerto madero Telefonica building at Puerto Madero.

If I may make a suggestion. Don't use such fast films when shooting at night; more importantly don't push film for night exposures- you simply don't need to. Use a slower ISO and expose longer. Your images at night could look a lot sharper if you use finer grain/slower ISO film. Check out the "Lost America" website for some great tips from a fantastic night photographer. He'll tell you his exposures are usually 8 to 10 mins @ ISO 50.