Genosha

Genosha is a man made island made by Magneto as a escape place for all mutants.

Humans are not allowed on it (though there are exceptions such as a human born child from mutant parents)

Genosha is way to large to explain everything inside it but it can be seen as a metal build city inhabited my mutants.

due to various mutants actions it possesses all modern pleasures and more.

Location/ Geography:
Genosha is build in the atlethic ocean by Magneto 's powers, from every side al you can see is the ocean, for some reason it is made so the metal never gets hot by the son.