{"id":27140,"date":"2022-06-28T19:32:45","date_gmt":"2022-06-28T17:32:45","guid":{"rendered":"https:\/\/www.villagreta.pl\/guide\/underground-city-osowka\/"},"modified":"2026-08-10T00:43:45","modified_gmt":"2026-08-09T22:43:45","slug":"underground-city-osowka","status":"publish","type":"post","link":"https:\/\/www.villagreta.pl\/en\/guide\/museums-attractions\/underground-city-osowka\/","title":{"rendered":"Underground City of Os\u00f3wka"},"content":{"rendered":"<ul>\n<li>Os\u00f3wka is the longest accessible complex of the &#8220;Riese&#8221; (Giant) project, built during World War II in the Owl Mountains<\/li>\n<li>work began in mid-1943, a huge system of concrete corridors, fortifications and halls was created.<\/li>\n<li>the purpose of the work is a mystery that has not been resolved to this day. According to some, it was supposed to be the secret headquarters of Adolf Hitler. Others claim that halls were built for underground armaments factories for the production of new weapons.  <\/li>\n<li>workers and prisoners from <a href=\"https:\/\/www.villagreta.pl\/en\/przewodnik\/muzea-atrakcje\/gross-rosen-german-concentration-camp\/\">the Gross-Rosen concentration camp<\/a> were used for work.<\/li>\n<li>the route is located several floors underground and is 1200 m long<\/li>\n<li>you overcome the extreme route by the light of flashlights<\/li>\n<li>the length of the extreme route is 1500 m, visiting this route will take you about 70 minutes<\/li>\n<li>the extreme route is designed for children from 8 years old and only under the care of parents<\/li>\n<li>take warm clothes and waterproof shoes or shoes for a change, underground at a temperature of 8 \u00b0 C you will stay about 1 h<\/li>\n<li>some of the footbridges are under water, you will also sail a holey boat in which water accumulates<\/li>\n<li>if you are intrigued by the mystery of the Underground City, be sure to visit the <a href=\"https:\/\/www.villagreta.pl\/en\/guide\/museums-attractions\/project-riese-giant-wlodarz\/\">W\u0142odarz Complex<\/a>, <a href=\"https:\/\/www.villagreta.pl\/en\/guide\/museums-attractions\/project-riese-rzeczka\/\">the Rzeczka complex<\/a> and <a href=\"https:\/\/www.villagreta.pl\/en\/przewodnik\/zamki-palace\/castle-ksiaz-furstenstein\/\">the underground of Ksi\u0105\u017c Castle.<\/a><\/li>\n<li>see other <a href=\"https:\/\/www.villagreta.pl\/en\/guide\/?filter_aktywnosc=pod-ziemia\">underground attractions<\/a> of Lower Silesia<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Underground City of Os\u00f3wka &#8211; an underground network of tunnels and rooms from the Second World War, one of the secrets of the Riese complex.<\/p>\n","protected":false},"author":7,"featured_media":24743,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"Underground City Os\u00f3wka | Riese | Complex Price list","_seopress_titles_desc":"Underground City Os\u00f3wka | Riese | Complex Ticket prices | Opening hours | Parking and access | Guided tour of | Owl Mountains","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","_seopress_news_disabled":"","_seopress_video_disabled":"","_seopress_video":[],"_seopress_pro_schemas_manual":[],"_seopress_pro_rich_snippets_disable_all":"","_seopress_pro_rich_snippets_disable":[],"_seopress_pro_schemas":[],"inline_featured_image":false,"footnotes":""},"categories":[168],"tags":[],"region":[211],"pogoda":[215,218],"najblizsze_miasto":[246],"aktywnosc":[256],"miejsca":[269],"dzieci":[],"class_list":["post-27140","post","type-post","status-publish","format-standard","has-post-thumbnail","category-museums-attractions","region-middle-sudetes","pogoda-rain","pogoda-heat","najblizsze_miasto-walbrzych-en","aktywnosc-underground","miejsca-historical-mystery"],"acf":{"g_tel":"+48 74 84 56 220","g_tel_2":"","g_email":"biuro@osowka.pl","g_www":"","g_adres":"Podziemne Miasto Os\u00f3wka\r\nul. \u015awierkowa 29 d\r\nSierpnica, 58-340 G\u0142uszyca","g_route":"https:\/\/goo.gl\/maps\/nj6RiGmFvERofBRM7","g_vg_odleglosc":68,"g_coords":{"lat":50.669668,"lng":16.4182026},"g_contact_extra_info":"","g_parking":"Free\n on site","g_mapa":{"address":"Podziemne Miasto Os\u00f3wka, \u015awierkowa, Sierpnica, Polska","lat":50.669639,"lng":16.418246,"zoom":14,"place_id":"ChIJh83IIlBFDkcRyp2oqrE6HlI","name":"Podziemne Miasto Os\u00f3wka","street_number":"29d","street_name":"\u015awierkowa","city":"Sierpnica","state":"Dolno\u015bl\u0105skie","post_code":"58-340","country":"Polska","country_short":"PL"},"g_czas":1.5,"g_dlugosc_trasy":1.2,"g_przewyzszenie":"","g_faq":[{"pytanie":"Is it possible to enter the underground of Os\u00f3wka with a dog?","odpowiedz":"You will not enter the underground with a dog, but the pet can be left in a specially prepared pen."},{"pytanie":"Is it possible to visit the Complex in Os\u00f3wka without a guide?","odpowiedz":"No, the entrance to the underground is only with a guide."}]},"_links":{"self":[{"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/posts\/27140","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/comments?post=27140"}],"version-history":[{"count":0,"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/posts\/27140\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/media\/24743"}],"wp:attachment":[{"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/media?parent=27140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/categories?post=27140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/tags?post=27140"},{"taxonomy":"region","embeddable":true,"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/region?post=27140"},{"taxonomy":"pogoda","embeddable":true,"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/pogoda?post=27140"},{"taxonomy":"najblizsze_miasto","embeddable":true,"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/najblizsze_miasto?post=27140"},{"taxonomy":"aktywnosc","embeddable":true,"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/aktywnosc?post=27140"},{"taxonomy":"miejsca","embeddable":true,"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/miejsca?post=27140"},{"taxonomy":"dzieci","embeddable":true,"href":"https:\/\/www.villagreta.pl\/en\/wp-json\/wp\/v2\/dzieci?post=27140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}