To find this mystery, you need to solve the adventure lab cache "Marie Marguerite". The adventure takes place in the turbulent 17th century of Luxembourg.
The painting « The siege of Luxemburg in 1684 », attributed to Jean-Baptiste Martin (1659-1735), shows a key moment in the history of Luxembourg. The artwork is exhibited in the Luxembourg City History Museum.
A second copy of the painting « The siege of Luxemburg in 1684 » is from Michel Weyler (1886). The artwork is exhibited in the Museum "Dräi Eechelen". This is an excellent museum about the history of the Luxembourgish fortress. The entrance is free.
The original painting « The siege of Luxemburg in 1684 » is from Adam Frans van der Meulen (1632–1690). The artwork is exhibited in the Château de Versailles.