Category to Page

I would like to have a category called Gallery. But when I click on Gallery, I don’t hope it to list blog posts; instead, it lists albums as working in the Page.

Is it possible? (Or I can assign this category to a Page?)

If it is not possible, I really need to have a plugin that can drop down the Page Tab, because I have a sub-page but can’t make it show under its parent Page. *Sigh*

Thank you very much!