Congrès International de l'Aftes

Congres International de l'AFTES is the 18th International Congress of the French Tunnelling and Underground Space Association, held at Lille Grand Palais in Lille, France. The event brings together civil engineers, geotechnical specialists, and underground construction professionals for conference sessions and a co-located exhibition covering tunnelling, ventilation, safety systems, sensors, and related equipment. The 2026 edition is themed around underground solutions to infrastructure challenges and includes a pre-congress training day, drawing several thousand professional visitors and exhibitors from dozens of countries.