McFadden Street
The McFadden Street was a backlot on the Paramount Pictures lot before the studio fire on , which resulted in the destruction of most standing outdoor sets, and later the revamp of the studio facilities.

This backlot served as a filming location for the  episode , depicting the surface of Sigma Iotia II, including the exteriors of Bela Okmyx's headquarters, and the surrounding city square. Filming took place on Monday .

Director James Komack commented: "The exterior stuff with the cars going by, bullets going off, and them hitting the ground, and making some kind of reality out of a backlot, was a little more difficult. [The Star Trek company] wasn't really prepared for it. They weren't used to it, and so it was a little slower for me." (These Are the Voyages: TOS Season Two, p. 494)
Filming locations