The Largest Fully-Steerable Single-Dish Telescope in the World: The GBT August 17, 2016 Olivia Wilkins See this content in the original post Groundbreaking for the GBT on May 1, 1991 (Left to right: Senator Robert C. Byrd, National Science Foundation Director Walter E. Massey, Associated Universities, Inc. President Robert E. Hughes). Image from the NRAO. See this content in the original post GBT Dedication Poster. Photograph by Mike Bailey; poster via NRAO/AUI. See this content in the original post At 485 feet, the GBT stands almost as tall as the Washington Monument (555 feet) and taller than the Statue of Liberty (305 feet). See this content in the original post View of the arm of the GBT from the back. Photograph by Olivia Harper Wilkins. See this content in the original post