The Greatest Mother of Them All (1) - S2-E9
Revealing mistake: When Ma Parker activates her jet-propelled wheelchair, the much younger stunt woman's face is visible as the chair speeds down the hallway toward Batman and Robin. (00:09:15)
The Greatest Mother of Them All (1) - S2-E9
Visible crew/equipment: While the GCPD has the Parker house surrounded Ma sits herself down on a rocking chair, and in the next shot as the officer uses the bullhorn to announce she doesn't have a chance, the reflection of the boom pole/mic is visible on the windshield. (00:07:05)
Answer: There wasn't one singular city used. It was shot in and around various locations in California, plus on a lot of sets and backlots. Ex. Some scenes were shot in LA, some in Pasadena, some in Santa Barbara, etc.
TedStixon