Sillon de Bretagne

Sillon de Bretagne is a skyscraper in Saint-Herblain, a suburb of Nantes, in the Loire-Atlantique department of France. At 32-storeys, 97 m it was the tallest building in France when completed in 1969. With the structure's massive 425 m width, and a footprint of 36,200 meters square, it remains one of the largest buildings in Europe by volume, providing living and office accommodations for approximately 3,600 people. The roof top houses the antenna system for the Digital Audio Broadcast (DAB) transmitter operated by Groupement des radios associatives de la métropole nantaise (GRAM).