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</html><thumbnail_url>https://i0.wp.com/footprintsoflondon.com/live/wp-content/uploads/2015/04/nannys-tunnel.jpg?fit=600%2C450&amp;ssl=1</thumbnail_url><thumbnail_width>600</thumbnail_width><thumbnail_height>450</thumbnail_height><description>Londoners are pretty used to being underground &#x2013; with millions travelling by tube each day, miles of underpasses and acres of basement office space. So its not surprising that there are lots of interesting things to see underneath London. The Footprints of London team have picked ten of their favourites, most of which are open...</description></oembed>
