I created a new theme from scratch, leveraging quick-development tools like Sass and Bootstrap. The new site is beautiful, responsive, and has a number of custom post types for news, resources, actions, and more. I created a custom map (built on Google maps, with custom colors and markers) of partners which the organization's staff can update via simple GUI system on the back-end. I created a custom timeline that works on a slider, massages to work as the designer intended. Custom content blocks allow the users to lay out their content in predictable consistent ways without having to worry about the learning curve of a drag-and-drop builder that can do too much.
I also built this site on WordPress MultieSite, so that the other two languages can be managed, using the same theme and sharing many of the same global site settings, with their own languages intact.