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</html><thumbnail_url>https://stoomtreinkatwijkleiden.nl/wp-content/uploads/2026/08/260831-foto-nacht-2.jpg</thumbnail_url><thumbnail_width>1000</thumbnail_width><thumbnail_height>668</thumbnail_height><description>Tijdens de Museumnacht op vrijdag 18 september van 19.00 uur &#x2013; 23.00 uur luister je naar muziekkoor Pop Core All Sounds en ontmoet je personen uit het smalspoorverleden. Ook staan er vier stoomritten op het programma, sfeervolle ritten rond een zonsondergang bij het Valkenburgse Meer. Er geldt deze avond een gereduceerde toegangsprijs van &#x20AC; 7,50 [&hellip;]</description></oembed>
