Société des grands projets

Line 18: the first of four new Grand Paris Express lines set to open in 2026

Good news for future users of the Grand Paris Express Line 18! The first tests kicked off on December 18 on the line's elevated section between Massy-Palaiseau and Saclay stations. Once operational later this year, this segment will mark the opening of the first of the four new lines in the Grand Paris Express network, ahead of lines 15, 16, and 17.

Paris: a free exhibition to discover the works of art of the Grand Paris Express

This autumn, the concourse of the Saint-Denis - Pleyel station is transformed to host a free exhibition. Between two journeys on line 14, come and discover a selection of 70 works of art from the stations of the Grand Paris Express.

Journées du Patrimoine 2025: take a behind-the-scenes look at the future stations of the Grand Paris Express

The European Heritage Days are back this weekend. To mark the occasion, 13 future stations of the Grand Paris Express will be opening their doors to the public free of charge. Join us this Saturday, September 20, 2025, to visit the construction sites of the Clamart station, the Châtillon - Montrouge station and the Massy - Palaiseau station. Here's everything you need to know.

KM12: Chelles, a free artistic celebration on the site of the future Grand Paris Express station

Would you like to take part in an artistic celebration to discover a future station of the Grand Paris Express? Join us this Saturday, June 14, 2025, at Chelles-Gournay station, east of the capital, to enjoy this unique and unusual event, free of charge. Click here for the program!

Line 15 South: behind the scenes of the Grand Paris Express trials

The testing phase is an essential step before the opening of a new metro line. With the opening of line 15 Sud now scheduled for the last quarter of 2026, we visited the Villiers-Champigny-Bry station, considered to be a "pilot fish" station, as well as the Champigny operations center next door. We take you behind the scenes of the Grand Paris Express trials.

Grand Paris Express: everything you need to know about the future metro line 17

Announced as a major new axis for the north of the metropolis, line 17 will cross three departments of the Paris region by 2030. Thanks to the opening of 8 new stations, it will soon be possible to reach Le Mesnil-Amelot from Saint-Denis - Pleyel in less than 25 minutes!

Grand Paris Express: everything you need to know about the future metro line 16

It will be the eastern ring-road of the Grand Paris metro network! With its 27.5 km of track, line 16 will link the Noisy-Champs station to the Saint-Denis Pleyel station by 2028, crossing two departments of the Paris region and serving 10 stations. Here's everything you need to know about this future metro line of the Grand Paris Express.

Line 14: the extension now inaugurated, what you need to know about the new stations

Considered the "backbone" of the Grand Paris Express, line 14 has now been extended to the north and south. As of Monday June 24, 2024, line 14 links Orly airport to Saint-Denis Pleyel in 40 minutes. Communes served, new stations and stations, connections... here's everything you need to know about the extension of this famous line 14 in Paris and the Île-de-France region.