Strange Sounds Architecture: Discover Massive Concrete Acoustic Mirrors or Sound Ears at Greatstone, UK
What are these weird concrete constructions found in Greatstone? The Sound Mirrors, also known as Acoustic Mirrors, Concrete Dishes or Listening Ears, were built in the 1920s and 1930s as part of an early warning system for Britain to detect enemy aircraft. Listening Ears by Stephen Birch Photography Their parabolic shape collected and magnified sound waves […] More