College Park is a village within the city limits of San Jose, California. It's the least busy station on the Caltrain line to San Francisco, served by only four trains Monday-Friday: even stations open only on weekends have more service!
With an almost unobstructed view, wonderful illumination, and a loudspeaker announcing approaching trains, it's a great place to watch the afternoon parade of Caltrain, Capitol Corridor, and Altamont Commuter Express commuter trains.