{"version":"1.0","provider_name":"Polen Travel (NL)","provider_url":"https:\/\/www.polen.travel\/nl","author_name":"Polen Travel (NL)","author_url":"https:\/\/www.polen.travel\/nl","title":"Tarnowskie G\u00f3ry - Historische Zilvermijn - Polen Travel (NL)","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"bnDogechrT\"><a href=\"https:\/\/www.polen.travel\/nl\/tarnowskie-gory-historische-zilvermijn\/\">Tarnowskie G\u00f3ry &#8211; Historische Zilvermijn<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.polen.travel\/nl\/tarnowskie-gory-historische-zilvermijn\/embed\/#?secret=bnDogechrT\" width=\"600\" height=\"338\" title=\"&#8222;Tarnowskie G\u00f3ry &#8211; Historische Zilvermijn&#8221; &#8212; Polen Travel (NL)\" data-secret=\"bnDogechrT\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\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\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/wp-nl.poland.travel\/wp-content\/uploads\/sites\/23\/2024\/03\/zabytkowa_kopalnia_srebra_tarnowskie_gory_1170x300.jpg","thumbnail_width":1170,"thumbnail_height":300,"description":"Tarnowskie G\u00f3ry herbergt de grootste en historisch belangrijkste lood-, zilver- en zinkmijnen, met een ge\u00efntegreerd, ondergronds waterwegen, onderdeel van een baanbrekend watertoevoersysteem, de grootste in zijn soort in de wereld.Gedurende honderden jaren waren in de omgeving van Tarnowskie G\u00f3ry een paar duizend mijnen in bedrijf. Tegenwoordig zijn de twee bekendste mijnen: Op de Werelderfgoedlijst van [&hellip;]"}