{"version":"1.0","provider_name":"Footprints of London","provider_url":"https:\/\/footprintsoflondon.com\/live","title":"Walking Tour - Trains, Drains and Remains - Footprints of London","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"zObCFpxSbB\"><a href=\"https:\/\/footprintsoflondon.com\/live\/eventbrite-event\/walking-tour-trains-drains-and-remains\/\">Walking Tour &#8211; Trains, Drains and Remains<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/footprintsoflondon.com\/live\/eventbrite-event\/walking-tour-trains-drains-and-remains\/embed\/#?secret=zObCFpxSbB\" width=\"600\" height=\"338\" title=\"&#8220;Walking Tour &#8211; Trains, Drains and Remains&#8221; &#8212; Footprints of London\" data-secret=\"zObCFpxSbB\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/footprintsoflondon.com\/live\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/footprintsoflondon.com\/live\/wp-content\/uploads\/2026\/05\/39661_image.jpg","thumbnail_width":2560,"thumbnail_height":1920,"description":"Discover what largely lies under-foot in the City including drains, sewage pipes, water conduits, burials, Roman remains and the Underground Considering the history of the City that is largely under our feet. We discuss the development of the Tube in the City and how it relates to embanking the Thames; peer over Blackfriars Bridge to..."}