Episodes airing soon
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Wemyss Bay
Tim Dunn visits Wemyss Bay Station in Inverclyde - an architectural gem. He also explores the engineering marvel that is Blackfriars station in central London.
- Not scheduled
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Royal Albert Bridge
Tim Dunn visits the Royal Albert Bridge and discovers how it was constructed. He also visits Wolverhampton to learn the history of its train stations.
- Not scheduled
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Piccadilly Line
Tim Dunn is in London exploring the striking stations of the Piccadilly Line's northern extension. Tim also takes a look at Causey Arch in County Durham.
- Not scheduled
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Barrow Hill
Tim explores the last working roundhouse in the UK, Barrow Hill in Derbyshire. Tim also visits Bath, a city renowned for its Georgian architecture.
- Not scheduled
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Huddersfield
Tim Dunn explores Huddersfield's Grade I listed station and examines the station's clock, and visits Cologne's magnificent Hohenzollern Bridge in Germany.
- Not scheduled
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Wharncliffe
Tim Dunn explores Brunel's first and last railway projects and looks at a Scottish station with a royal connection.
- Not scheduled
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Charing Cross
Tim Dunn 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.
- Not scheduled
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Bramhope Tunnel
Tim Dunn heads underground at the magnificent Victorian Bramhope Tunnel in West Yorkshire, one of the longest tunnels in Britain when it was built.
- Not scheduled
Episode guide

Series 1
The Architecture the Railways Built
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The Architecture the Railways Built
Tim Dunn explores disused tube station Down Street in Mayfair that played a crucial tactical role during WWII and tours Rotterdam's new centraal station with its designer.
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The Architecture the Railways Built
Tim Dunn visits the Ffestiniog in Wales originally built to transport slate from mountain to coast and learns about Amsterdam Centraal.
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The Architecture the Railways Built
Tim Dunn visits the Ribblehead Viaduct in the Yorkshire Dales and tours the breath-taking stations of the Hungerbergbahn in Innsbruck.
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The Architecture the Railways Built
Tim Dunn goes behind the scenes at London's Kings Cross station and finds out about the disused funicular railway hidden in the Avon Gorge in Bristol.
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The Architecture the Railways Built
Tim Dunn explores Metroland, the area around the Metropolitan Railway, and in Great Malvern learns about the woman behind the decorative 1860s station.
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The Architecture the Railways Built
Tim Dunn visits the architecture of the Stockton & Darlington railway, the first passenger steam line in the world and learns how Essex's enormous Chappel Viaduct was built.
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The Architecture the Railways Built
Tim Dunn visits Swindon's railway village, which became home to Great Western's enormous works and he also explores the dark and secret past of Milan's monumental station.
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The Architecture the Railways Built
Tim Dunn visits the former HQ of London Underground, 55 Broadway, which was the capital's first skyscraper, and sees the timber-framed Barmouth Bridge in north Wales.
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The Architecture the Railways Built
Tim Dunn explores St Pancras station in London and its sister hotel - built to show off the might of the Midlands, and learns about Castle Howard station in North Yorkshire.
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The Architecture the Railways Built
Tim Dunn rides up Mt Snowdon's railway to visit the summit station, and discovers how a glass structure envelopes Strasbourg's 19th century station.
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Series 2
The Architecture the Railways Built
-
Wemyss Bay
Tim Dunn visits Wemyss Bay Station in Inverclyde - an architectural gem. He also explores the engineering marvel that is Blackfriars station in central London.
- Not scheduled
-
Royal Albert Bridge
Tim Dunn visits the Royal Albert Bridge and discovers how it was constructed. He also visits Wolverhampton to learn the history of its train stations.
- Not scheduled
-
Piccadilly Line
Tim Dunn is in London exploring the striking stations of the Piccadilly Line's northern extension. Tim also takes a look at Causey Arch in County Durham.
- Not scheduled
-
Barrow Hill
Tim explores the last working roundhouse in the UK, Barrow Hill in Derbyshire. Tim also visits Bath, a city renowned for its Georgian architecture.
- Not scheduled
-
Huddersfield
Tim Dunn explores Huddersfield's Grade I listed station and examines the station's clock, and visits Cologne's magnificent Hohenzollern Bridge in Germany.
- Not scheduled

Series 3
The Architecture the Railways Built
-
Charing Cross
Tim Dunn 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.
- Not scheduled
-
Wharncliffe
Tim Dunn explores Brunel's first and last railway projects and looks at a Scottish station with a royal connection.
- Not scheduled
-
Bishopstone
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 WWII.
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North Staffordshire
Tim Dunn takes a trip through the history of the North Staffordshire Railway Company, admiring the beautiful Stoke Station.
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Curzon Street
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.
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Saltburn
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.
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Greenwich
Tim Dunn explores London's first passenger railway - the London and Greenwich Railway, on the longest railway viaduct in Britain today.
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Bramhope Tunnel
Tim Dunn heads underground at the magnificent Victorian Bramhope Tunnel in West Yorkshire, one of the longest tunnels in Britain when it was built.
- Not scheduled
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Ramsgate
Today Tim Dunn heads to the seaside to find out how the railways changed the fortunes of Margate and Ramsgate.
Not scheduledNot scheduled