Girl Wearing Superhero Costume

Headquarters
Many superheroes (and supervillains) have headquarters or a base of operations. These locations are often equipped with state-of-the-art or even alien technologies, and may be disguised or in secret locations to avoid being detected by enemies or the general public. Some, such as the Baxter Building, are known of by the public (even though in some other cases the precise location may remain secret). Many heroes and villains who do not have a permanent headquarters are said to have a mobile base of operations.