The station building was designed by the classically trained architect Philip Hardwick with a trainshed by structural engineer Charles Fox. It had two platforms, one each for departures and arrival. The main entrance portico, known as the Euston Arch was also by Hardwick, and was designed to symbolise the arrival of a major new transport system as well as being seen as "the gateway to the north". It was high, and supported four by hollow Doric propylaeum columns made from Bramley Fall stone, the largest ever built. It was completed in May 1838 and cost £35,000 (now £).