My site is runnning Drupal 7.x, however I would like to know the best approach to create mega-menus (like the one in the screenshot below) without installing extra modules. I'm a developer but I don't have much experience with Drupal.
Honestly I don't care if I have to create manually many regions or blocks as links on the main menu as long as I can bind them. Is there any way of doing this? Maybe adding a extra field (perhaps a select with a list of regions) on [http://mysite.example.com/admin/structure/menu/manage/main-menu -> Menu item] could do the trick ?
Please let me know if my option is a dead end, I'm open to any solution.
Thank you in advance.