Yosami Transmitting Station
Yosami Transmitting Station was a very large transmitting station for intercontinental communication and for submarine communication in the VLF-range at Kariya, Aichi, Japan. Yosami Transmitting Station used as antenna a wire antenna system, which was spun between 8 guyed masts, each 250 metres tall and insulated against ground.
Source: Wikipedia — Yosami Transmitting Station (CC BY-SA 4.0)