Description: The Smithsonian Institution’s first building, the Castle, was designed by architect James Renwick. Until 1881, it housed all aspects of Smithsonian operations, including research, administration, lecture and exhibit halls, library, laboratories, collections storage, and living quarters for the Secretary. Today, the Castle houses administrative offices and the Smithsonian
Description: Established in 1890, the Smithsonian Astrophysical Observatory was one of the earliest observatories to practice the "new astronomy," or astrophysics. Originally located behind the Smithsonian Institution Building, the Castle, in 1955, the Observatory moved to Cambridge, Massachusetts. Today, the Harvard-Smithsonian Center for Astrophysics has observing stations in Arizona,