December 18, 2025: our investigation in Saint-Germain-en-Laye is launched

Discover Saint-Germain-en-Laye through an immersive historical investigation set in the city’s iconic streets and landmarks. Inspired by the reign of Louis XIV, this outdoor treasure hunt blends puzzles, heritage, and storytelling for a one-of-a-kind experience.

Whether for team building, a family cultural activity, or a day out with friends, this adventure is perfect for strengthening bonds while exploring French history in a whole new way.

Our investigation is a must for outdoor gaming!

After your adventure, take a stroll through the château park, and for the bravest, walk the 1,949 meters (double that, since you’ll need to return) of the grand terrace designed by Le Nôtre. From there, you’ll enjoy breathtaking views of Paris and the entire Seine Valley.

A brief overview of the city

Located in the Yvelines department (78), just twenty kilometers west of Paris, Saint-Germain-en-Laye is a city rich in historical and cultural heritage. Once a royal residence, it was the birthplace of many French kings, including Louis XIV in 1638.

Dominating the city is its majestic château (Château Vieux), now home to the National Archaeology Museum, offering a remarkable journey through French history from the Middle Ages to the present day. The famous terrace of Saint-Germain-en-Laye, designed by Le Nôtre, provides an exceptional view of the Seine Valley, Paris, and the La Défense district.

Surrounded by a vast national forest, Saint-Germain-en-Laye is also a city focused on nature and leisure, known for its walking trails, bike paths, and green spaces. Its lively city center, shops, markets, and cultural facilities make it an attractive place to live for families and visitors alike.

A dynamic and elegant city, Saint-Germain-en-Laye harmoniously combines history, quality of life, and proximity to Paris, making it one of the most emblematic towns in the Yvelines.