Old Naval Observatory Building, circa April 2008
Credit: https://commons.wikimedia.org/wiki/File:US_Naval_Observatory_(Washington,_District_of_Columbia).jpg
Old Naval Observatory (National Observatory; Naval Museum of Hygiene; Naval Medical School): As the original National Observatory, this building was the home of many notable scientific achievements in its day.
The original National Observatory was authorized by President Tyler in 1842 and completed in 1844 according to plans prepared by Lieutenant James Melville Gilliss. The observatory was the site of…