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</html><thumbnail_url>https://www.visitdaugavpils.lv/wp-content/uploads/2020/06/daugavpils-cietoksnis-02.06.2020-17-1024x683.jpg</thumbnail_url><thumbnail_width>1024</thumbnail_width><thumbnail_height>683</thumbnail_height><description>A thematic tour &#x201C;A history of the long-term fortification&#x201D; tells the story about fortifications, their features and purpose at the Daugavpils Fortress. Over the centuries, an incredible number of unique fortresses and fortification complexes has been built around the world. Each of them has a special structure and it depends on many factors. However, despite ... &gt;&gt;</description></oembed>
