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Great Western Railway: An engineering wonder of the west country

12 August 2014 Last updated at 13:03 BST

As part of 150th anniversary celebrations for the Clifton Suspension Bridge in Bristol, BBC Points West is exploring some of the other engineering marvels in the west country.

Science author and broadcaster Jheni Osman has chosen her five favourites, beginning with a train ride along Brunel's Great Western Railway.

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