The Thames Barrier. From the Open City Thames Architecture Tour East. Photo date: Saturday, November 10, 2018. Photo: Roger Garfield/Alamy

- Image ID: R210H1
The Thames Barrier. From the Open City Thames Architecture Tour East. Photo date: Saturday, November 10, 2018. Photo: Roger Garfield/Alamy
Roger Garfield / Alamy Stock Photo
Image ID: R210H1
Location: London