The Aquarium-Muséum and the Maison de la Science join forces to take you on a scientific and apocalyptic adventure!

A meteorite has crashed into the hall of the Institute of Zoology... and with it, a mysterious evil has contaminated the planet. Since then, things have gone from bad to worse: some people are displaying strange, uncontrollable behavior. To this day, it's impossible to know what's causing it, or how the infection is spreading.

With family or friends, visitors are invited to take part in a treasure hunt, where each riddle brings them closer to a single goal: to discover the cure that will save the world. But to do so, they must first identify the cause of the contamination: bacteria, virus, parasite... or something else?

The investigation begins at the Maison de la Science, with a free-access immersive trail (10am-6pm), where visitors can consult scientific analyses, test their skills and explore the different faces of the pathogen. Activities focusing on survival techniques and storytelling will punctuate the day.

The experience continues through the secure corridors of the Aquarium-Muséum, transformed into a bunker - the ultimate refuge! The route is personalized: each group follows a different path, but all pass through the disinfection zone at the entrance, then the armory, where the first enigma awaits.

The game is designed to make you think, learn and have fun, while raising awareness of biodiversity issues for young and old alike.

The event is open to children aged 6 and over. Treasure hunt: ages 8 and up.

The Planetarium and the Botany and Evolution Galleries are not accessible during the Halloween event.

TheAquarium-Muséum and the Maison de la Science are closed on October 16 and 17 and on November 3 and 4, 2025.