Event· Rotterdam
Verborgen Boeken
"Verborgen Boeken" (Hidden Books) appears to be a book-related event—likely an exhibition, treasure hunt, or puzzle activity involving discovering hidden or secret books—running through December 31, 2026. Since I only have the title and end date, I can't confirm the exact details; if you can share more information (location, organizer, description), I'd be happy to write a more accurate summary.