Roswell

Roswell was a small town in New Mexico, in the United States of America, which, much like London, became a hub of alien activity in the 20th century.

History
In 1947, a Nedenah flying saucer crashed near Roswell and was salvaged by the United States Army. (PDA: The Devil Goblins from Neptune) And around the same time a craft piloted by a Gray alien ambassador also landed in the vicinity. (DW: Dreamland)

In 1970, the Waro attacked the Army base there. (PDA: The Devil Goblins from Neptune)