Shrewsbury railway station was originally built in October 1848 for the county's first railway — the Shrewsbury to Chester Line. The architect was Thomas Mainwaring Penson of Oswestry. The building is unusual, in that the station was extended between 1899 and 1903 by the construction of a new floor underneath the original station building. The building style was imitation Tudor, complete with carvings of Tudor style heads around the window frames. This was done to match the Tudor building of Shrewsbury School (now Shrewsbury Library) almost directly opposite. The station's platforms also extend over the River Severn. It was operated jointly by the Great Western Railway (GWR) and the London and North Western Railway (LNWR).