2020 | 10 Episodes

Season 1 of The Architecture the Railways Built premiered on April 28, 2020.

Series 2

2021 | 10 Episodes

Season 2 of The Architecture the Railways Built premiered on January 19, 2021.

Series 3

2021 | 10 Episodes

Season 3 of The Architecture the Railways Built premiered on September 13, 2021.

Season 4

2023 | 10 Episodes

Season 4 of The Architecture the Railways Built premiered on February 28, 2023.

In the fourth series, Tim also explores the history of railway design with special access to the Network Rail archives – the first time this repository of railway history has been featured on TV – and the archives of the National Railway Museum, a treasure trove full of architects’ plans, drawings and rare artefacts, containing the untold histories of railway buildings.