In at least red and blue, yes.
there really isn't glitch city but if you put in a specific cheat of something, maybe you might come across glitch city. WARNING: glitch city may not have a Pokemon center due to the glitches...
You don't get to glitch city. It's not real
No,it is a glitch
missingo is not a real Pokemon but it is a glitch in the game
cinabar island
You can find this information on bulbapedia, but some well known ones are Glitch City, Mew Glitch, Missingno. Glitch, and there are limitless glitch pokemon.
Yes, it is north of Ilex Forest or south of Goldenrod City.
Pokemon oval, i think its fake but it might be the fake name of Pokemon platinimun if you are worndering what it is its a glitch free vertion of Pokemon pearl and dimond its real name is Pokemon platinmun and yes its real
There is no tower, not even a glitch tower, in Pewter City.
The legimitate way is to download the GS Ball from a Nintendo Promotion Event and send it to Gold from Crystal, then place it in the shrine in Ilex Forest. There is also a glitch found by Paco_81 in Glitch City Laboratories. Check Glitch City for the glitch.
Misingno is is a glitch Pokemon in Pokemon red, blue and yellow. It's possible to find it by the old man glitch and the mew glitch.
No, there isn't a glitch to get all the Pokemon in the games.