Tim Dunn visits the historic Grade 1 Curzon Street Station, to be reborn as part of the terminus for HS2, the rail link between London and Birmingham.

Today Tim Dunn heads to the seaside to find out how the railways changed the fortunes of Margate and Ramsgate.

Tim Dunn takes a trip through the history of the North Staffordshire Railway Company, admiring the beautiful Stoke Station. He also looks at the revolutionary Byker Viaduct which carries the Newcastle Metro over the Ouseburn Valley.

In Poland, the Elblag Canal is a unique piece of engineering - half railway and half waterway.

Tim explores London's first passenger railway – the London and Greenwich Railway, on the longest railway viaduct in Britain today.

He also marvels at the mechanics of the Deptford Creek Lifting Bridge and the brewing businesses that operate under the arches of the viaduct today.

The programme explores Alnwick Station, a disused station in the North East of England, reinvented as one of the UK's largest second-hand book shops. And in Central Europe, the Zampach Viaduct in the Czech Republic was built as part of a much-needed rail link to transport timber to the capital, Prague.

Tim Dunn heads to Bishopstone in Sussex, a seaside station with a difference – it's also a fortress designed to defend the nation from German attack in World War Two. Tim also looks at the Selby Diversion – a 1980's engineering triumph. At Stockholm Central in Sweden, Tim discovers that building a large station in a city made up of fourteen islands was a town planner's nightmare.

Tim Dunn visits the popular Victorian holiday resort Saltburn-by-the-Sea, exploring the North Yorkshire town that owes its very existence to the railways.

As well as admiring the town's grand station, Tim stops off at the former railway hotel with its own private platform, the impressive seaside pier and eco-friendly cliff tramway.

Tim also takes a look at Grade 2 listed Brislington Tram Depot in Bristol, and uncovers the story of Aleksandrow?Kujawski, a Polish border station that welcomed Russian Royalty.

Tim heads underground at the magnificent Victorian Bramhope Tunnel in West Yorkshire.

Tim also visits Fawley Hill, home to Sir Bill McAlpine's unique collection of railway memorabilia, and to epic Dresden Station in Germany.

Tim uncovers the secrets above, below and inside London's Charing Cross Station. He also looks at the modern wonder of the Ordsall Chord in Manchester and tells the tale of two stations in the Swedish town of Boras.

Tim explores Brunel's first and last railway projects and looks at a Scottish station with a royal connection. Later he takes in the delights of a Portuguese station which looks more like a palace than a railway terminus.

Tim Dunn takes to the tracks in Newcastle to explore a city rich in railway architecture. He looks at two recording breaking structures in Scotland and marvels at the quirky design of a funicular in the German highlands.