The European Space Agency headquarters in Paris opens its doors this weekend
Imagine stepping inside a place where the decisions are made that send satellites into orbit and shape Europe’s planetary exploration ambitions. This weekend, on 19 and 20 September 2026, the European Space Agency headquarters in Paris opens its doors to the general public for the second edition of its Open Days, as part of the European Heritage Days.
A rare chance to step inside the heart of European space cooperation
Located in the 15th arrondissement of Paris since 1976 and fully renovated in 2023, the European Space Agency headquarters in Paris is a strategic site that is normally off-limits to the public. This is where space missions, scientific projects and satellite programmes are coordinated, the very initiatives that cement Europe’s place in the race to explore space.
For this exceptional weekend, the doors open Saturday from 10am to 6pm and Sunday from 10am to 4pm. The opening offers genuine behind-the-scenes access to an organisation whose remit spans Earth observation from space, navigation, and the development of cutting-edge space technologies.
What’s more, this 2026 edition marks only the second time the site has hosted such an event, making it all the more anticipated by space enthusiasts and curious visitors alike.
What the programme has in store for visitors to the ESA headquarters in Paris
The programme put together by the headquarters team is packed and varied. Visitors can attend talks led by space industry specialists and meet an ESA astronaut in person, a tangible opportunity to put a human face to missions unfolding hundreds of kilometres above our heads.
- Talks led by space sector experts
- Meet-and-greet with an ESA astronaut
- Simulation of the ESA Council and the decision-making process of member states
- Exhibition of satellite, probe and launcher scale models
- HR stand dedicated to career opportunities within the ESA
- Access to the Astrolabe science culture space and the ESA shop
The ESA Council simulation deserves special mention. It offers a window into how member states make the major decisions that steer the Agency, so this is not just a technical deep-dive, but also a look at the governance behind European space cooperation.
Practical information to plan your visit
Entry is free, though a few conditions apply. For the talks and Council simulations, registration is required. The booking link is available on the ESA’s official website, in the section dedicated to France.
Other areas, however, remain open without prior registration. The Astrolabe science culture space and the ESA shop welcome visitors freely across both days. The visit can therefore be shaped around your own interests, mixing scheduled sessions with free exploration.
That said, signing up early for the limited-capacity activities remains the best way to make the most of everything on offer at the European Space Agency headquarters in Paris.
European Heritage Days 2026: between history and exploration
This opening is part of the broader European Heritage Days, held every year in Paris and the Île-de-France region. Museums, private mansions, iconic institutions and unexpected venues throw open their doors for free this weekend, sometimes for the very first time.
The ESA brings something genuinely new to the 2026 edition. While most heritage sites invite visitors to look back into the past, the European Space Agency headquarters in Paris turns the gaze firmly towards the future, towards planetary missions and the technologies shaping Europe’s presence in space.
In just two days, it is possible to move from the historic corridors of a grand hôtel particulier to the inner workings of a centre coordinating scientific projects on a continental scale. The heritage of 2026, it turns out, is not limited to ancient stone: it also includes the machinery of an agency carrying Europe towards the stars.
