Koskikeskus (literally Rapids Center in Finnish) is a neighbourhood in the Tuira area in the city of Oulu, Finland.

Other notable islands in the neighbourhood are Linnansaari, Raatinsaari and Kuusisaari.

The ruins of the Oulu Castle are located on the Linnansaari island.

The former Oulu Marine School's observatory has been built on the ruins in 1875.

In recent years the festival area has expanded to include a part of the Raatinsaari island too.