Striaton City is a city in Unova, the region featured in Black and White. Striaton City holds the Trainer's School of the region and the first Gym in Unova's Pokémon League. It is home to Professor Juniper's friend, who gives you the C-Gear. The creator of Unova's PC System is also located in Striaton City.
There is also a man behind a few of the buildings that will give you a Dusk Ball. There is a garden/spring-style area to the left of the city as well.