These sub-page should be limited to text with links to pertinent pages. A image page can be created if needed.
Also these sub-pages will have a secondary navigational butttons below the main buttons. I do not have anything against drop down menus except when they cover information which is sitting below said buttons.
The info on the side columns will remain the same throughout the main pages.
See the Espanola page to see if you want a scroll feature on a page.