San Diego is a large city on the southern border of California. It was first discovered by Europeans in 1542 when Juan Cabrillo claimed the area for Spain. In 1821, when Mexico declared its independence from Spain, San Diego became part of what was then called Alta California, a Mexican state. As a result of the Mexican-American war, Alta California became part of the United States, bringing San Diego with it.
When the San Diego Incident occurred, the cargo ship S.S. Venture crashed into a dock in San Diego harbor, releasing a full grown, male Tyrannosaurus into the San Diego area. After causing much damage and at least one casualty, the Tyrannosaurus was led through the streets by Ian Malcolm and Sarah Harding back to the boat.