The nineteenth century home, located at 1 Observatory Circle, is on the grounds of the U.S. Naval Observatory, which serves as a hub for astronomical research on all things in the sea, on land and ...
Nabta Playa, discovered in 1974, is a prehistoric site located in a remote desert region near the border of Egypt and Sudan.
The home is at 1 Observatory Circle, on the grounds of the US Naval Observatory. AP Set on 12 acres of the 72-acre observatory, the white, three-story mansion features a wraparound porch ...