Europe 1 Transmitter Building
The Europe 1 Transmitter building is located in Felsberg, a part of the municipality Überherrn, Germany close to the French border. It was built in 1954 to house the transmitter device of Europe 1, and the maiden transmission was made on January 1, 1955.
Source: Wikipedia — Europe 1 Transmitter Building (CC BY-SA 4.0)