Hello! I'm Outgoing.I help make life more interesting.
Hello! I'm Outgoing.I help make life more interesting.
This event is in the past.It took place on September 21, 2025 at International Bureau of Weights and Measures.
Walking Tour
Walking TourStep inside the Pavillon de Breteuil, where the world's kilogram and meter are kept on actual international land. This rare Heritage Days opening celebrates 150 years of the BIPM with guided tours through Louis XIV's gardens and antique scientific instruments.
Scientific heritage
Royal gardens
Rare access
Measurement history
Tips
⚖️"To be at the heart of the SI, the epicentre of metrology, is always something special"
🌍the grounds are officially international territory, not French soil
🚪enter from the south through Sèvres, not through Saint-Cloud park
Journées du Patrimoine 2025
Walking TourWalking TourStep inside the Pavillon de Breteuil, where the world's kilogram and meter are kept on actual international land. This rare Heritage Days opening celebrates 150 years of the BIPM with guided tours through Louis XIV's gardens and antique scientific instruments.
Scientific heritage
Royal gardens
Rare access
Measurement history
Tips
⚖️"To be at the heart of the SI, the epicentre of metrology, is always something special"
🌍the grounds are officially international territory, not French soil
🚪enter from the south through Sèvres, not through Saint-Cloud park
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