Arecibo Telescope

The Arecibo Telescope in Puerto Rico in 2014, six years before it fell. The 1,000-foot (305-meter) dish was built into a natural hollow in the hills and could not move, so the receiver moved above it on a platform suspended from three towers. Completed in 1963, it served radio astronomy and planetary radar for decades. After two support cables failed in 2020, the platform crashed into the dish on December 1, 2020, and no one was hurt.