

A network of marl (limestone) tunnels with carved galleries, wartime inscriptions and sculpted reliefs—ideal for moody, textural interior shots. Visits are by guided tour only (book in advance); tours run year-round with constant cool, damp conditions and low light. Arrive on weekdays or morning slots to avoid crowds. Access involves steps and uneven floors; nearby street parking at Luikerweg. No tripods on some tours—check rules when booking.


A network of marl (limestone) tunnels with carved galleries, wartime inscriptions and sculpted reliefs—ideal for moody, textural interior shots. Visits are by guided tour only (book in advance); tours run year-round with constant cool, damp conditions and low light. Arrive on weekdays or morning slots to avoid crowds. Access involves steps and uneven floors; nearby street parking at Luikerweg. No tripods on some tours—check rules when booking.