Satan City

From Dragon Ball Wiki, the ''Dragon Ball'' encyclopedia

Satan City was originaly named "Orange Star City", but was renamed after Mr. Satan in commemoration of his supposed victory over Cell (which Gohan actually won). Orange Star High School was located in this city.

It is quite possible that Satan City is the same city that appears in Dragonball Evolution as Goku school bears a strong resemblance to Orange Star High School and if one looks at key scenes that take place in the school a logo very similar to the one Orange Star uses can be seen in the background.