In a few word
Open House Day
Every September, the European Heritage Days invite visitors of all ages to step inside iconic sites, discover their history and take a fresh look at the heritage that surrounds us.
At the Cité des Télécoms, it is an opportunity to explore our scientific and technical heritage, discover the secrets of our famous horn antenna and understand how telecommunications have shaped the major changes in our society. And this year, the celebration is even more special: we are celebrating 100 years of television! 📺
A man explains one of the activities offered during the 2025 European Heritage Days to a child. The 2025 European Heritage Days at the Cité des Télécoms.
100 years of television – Visit / Investigation under the Radome!For the European Heritage Days, visitors will be invited to take on a challenge at the heart of the monument:
« To celebrate 100 years of television, the PB1 antenna is back in action! Unfortunately, the code needed to restart its motor has disappeared.
Former Radome engineers have left clues in the form of riddles all around the antenna. It is now up to the public to solve them and recover the precious code! »
Accompanied by our mediators, set off with family or friends to discover this iconic monument. Learn more about its impressive horn antenna, its history and the major role it has played in the history of telecommunications and television! 📺
So, join us at the Cité des Télécoms on Saturday, September 19 and Sunday, September 20, 2026, from 10 a.m. to 6 p.m., and enjoy this exceptional weekend free of charge!
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