Guggenheim.org has recently been redesigned. The official blog covers the changes made and why they chose WordPress. The main WordPress-centric quote:
We chose WordPress for a few reasons—among them, the broad pool of developer resources, the excellence of the content administration interface, the rapid update release cycle, the ease of extending functionality, and the CMS’s deep taxonomy.
Alley Interactive (some of you recognize them of course) helped them develop with WordPress as the “headless CMS” using the WordPress REST API to a front-end built with AngularJS. The blog calls this method, “superior to the standard WordPress templating approach,” and I think it definitely makes for an impressive showcase.
We are going to see more examples of “headless WordPress” sites like this. We’ve seen some already, but it’s only the beginning.