Using a harmless bacteria called Sporosarsina pasteurii to calcify sand into various shapes, designers William Boujon and Julien Benayoun of Bold-Design have created a DIY structure making kit called The Memorabilia Factory.

The idea came about as part of the Design Exquis project, wherein one team of designers pass on an idea to serve as inspiration for the next team (similar to the recently featured 15Folds). With the intention of denouncing the idea that all bacteria is harmful, as well as looking for a way to recreate the naturally formed Stromatolites of Australia, the design duo came up with a series of models that each represent various famous rock formations from around the world, including Durdle Door in Dorset and the Kho Phi Phi islands in Thailand.