In 2015 L’Observatoire joined Agence Jouin Manku in the development of an architectural character and identity for the Paris Metro. Project goals were to achieve a solution that improves the clarity, security, comfort, identity and sustainability of the Metro.

L’Observatoire’s strategy focused on ergonomic light that uses LED technology to create consistency between above and below ground lighting. Light was also used to assist in wayfinding and traffic flow, and was integrated with existing structures and architecture when possible to create a comfortable experience for users.