Slagen church is located in Tønsberg municipality, and is a long church built in stone.
There are over 500 seats in the church.
In the years 1955-56, the church was restored. The altarpiece, pulpit and baptismal font we see today in the church are from that time. The cemetery seen on the outside of the church has been expanded in recent times. Today it stretches to both sides of the road.