The Oslo Agreement was created in 2009.
The Oslo Accords were signed in 1993 and 1995, and partly superseded by the Gaza-Jericho Agreement (aka 1994 Cairo Agreement).
Oslo City was created in 1988.
Oslo Courthouse was created in 1994.
Oslo Tramway was created in 1875.
The Oslo Center was created in 2006.
Oslo Spektrum was created in 1990.
Oslo Philharmonic was created in 1919.
Oslo Tunnel was created in 1980.
Oslo Plaza was created in 1989.
Oslo - band - was created in 2001.
Oslo Metro was created in 1966.
Shipwrecked in Oslo was created in 2006.