The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Blog posts (1 member)
- Browse (8 members)
- Building built in 1961 (1 member)
- Buildings Built in 2009 (1 member)
- Buildings Built in 2010 (2 members)
- Buildings built in 2013 (1 member)
- Candidates for deletion (0 members)
- Disambiguations (0 members)
- Help (0 members)
- Images (1 member)
- Megatall Skyscraper (7 members)
- Skyscrapers (6 members)
- Supertall Skyscrapers (6 members)
- Template documentation (27 members)
- Templates (27 members)
- Twin Buildings (1 member)
- Videos (2 members)