{"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":"Narwia\u0144ski Nationaal Park - Polen Travel (NL)","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"8oPwvqayHR\"><a href=\"https:\/\/www.polen.travel\/nl\/narwianski-nationaal-park\/\">Narwia\u0144ski Nationaal Park<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.polen.travel\/nl\/narwianski-nationaal-park\/embed\/#?secret=8oPwvqayHR\" width=\"600\" height=\"338\" title=\"&#8222;Narwia\u0144ski Nationaal Park&#8221; &#8212; Polen Travel (NL)\" data-secret=\"8oPwvqayHR\" 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\/2022\/12\/kladka_sliwno-waniewo_npn_1170.jpg","thumbnail_width":1170,"thumbnail_height":780,"description":"De belangrijkste natuurwaarde van het park is het unieke karakter van de rivier. Binnen zijn grenzen stroomt de Narew in vele kanalen die een onregelmatig, complex netwerk vormen. De grote schat van het park en de rand van de vallei is de avifauna. Er zijn hier meer dan 200 soorten vogels aangetroffen, waaronder 28 met [&hellip;]"}