This page uses header template #1 which is made up of three main rows. The top row features a menu location on the left and a widget area on the right. The middle row features the logo, site title, and site description on the left and a menu location to (with widget area below) to the right. Finally, the bottom row features a menu location.
Don’t forget, header templates are dynamic so you can configure each one to use different menus and widgets. Also, if you don’t define anything to display in a particular row then it isn’t displayed.
This means all rows are optional allowing even more flexibility in how your header looks.