The distinctively shiny shapes of the Thames Barrier are the most tangible result.

BBC: Legacy of Britain's great flood

My candidates are the Panama Canal, the Thames Barrier and the Channel Tunnel.

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From here the Thames makes its final dash past the shimmering floodgates of the Thames Barrier to the North Sea.

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It was involved in building the Channel Tunnel and the Thames Barrier.

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The Environment Agency said it would close the Thames Barrier near the London stretch of the river again on Thursday evening after reopening it at 15:00 GMT.

BBC: Osney Island in Oxford

As we stand in the Thames Barrier control room, computer screens tracking the waves out in the North Sea, I ask him about the value of remembering the catastrophe of 1953.

BBC: Legacy of Britain's great flood

Rather than trying to eliminate the source of these tides, between 1974 and 1984 the U.K. constructed the Thames Barrier, an innovative monumental system of movable floodgates that prevents the flooding.

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In these scenarios, the British Isles could face an increase of slightly over a metre by 2100 - enough to overwhelm the Thames Barrier and see London flooded once every 10 years.

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Since 1984 London has been safely protected by the Thames Flood Barrier, built to prevent a repeat of storm surge that caused widespread destruction and killed 307 people along the east coast of England in 1953.

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Dr Bloore, who lives near a tributary of the Thames in Twickenham, south-west London, experienced flooding before the barrier was built.

BBC: Thames Barrier engineer says second defence needed