rhine river cruises, kaub town and medieval castle gutenfels. germany ,travel and landmarks

activity architecture attraction beautiful boat burg castle cruise cruises destination excursions famous fort fortress german germany germanyview goarshausen gorge gutenfels heritage historic hotel interest kaub landmark landmarks landscape medieval middle mountain nature oberwesel old pictorial picturesque popular rhein rhine river riverkaub romantic scenery scenic site tourism tourist touristic town travel trip unesco valley view village water world