| Looks like one of Jimmy Neutron's incomplete inventions. |
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Retroville is the city where The Adventures of Jimmy Neutron is set. Evidence points to it being located in Texas, with several references as it located there (ranches nearby, warm climate, as well as phone numbers being in the 212 area-code). Retroville is near a downtown area (as a possible reference to Sugar Land next to Houston).
- Retro refers to old trends that have regained popularity once again, it is seen in some buildings and cars with 1940s and 1950's style, and the towns Candy Bar seems to have a 1950's style design.
- Retroville has an emergency siren system, probably a cold war based, that sounds whenever the city is in danger. The sirens go off in Win, Lose, and Kaboom when a meteor hurtles toward Retroville.