Tiburon was a city, located on Earth, in the state of California. The city was in the greater San Francisco Bay area, and was located north-east of Sausalito. (Star Trek IV: The Voyage Home)
In 2377, Deanna Troi and William T. Riker decided to spend their vacation in Tiburon. (VOY: "Inside Man")
The location of Tiburon was identified on a bus route map.