Gatsby Bricks is a website built using the Gatsby framework and hosted on Netlify, which uses Contentful as its headless CMS. The site was created by Dan, who switched from Drupal to Contentful due to its ease of use and adoption. Contentful's UI supports nested content structures, making it suitable for projects like Gatsby Bricks. The website has a custom-built frontend using React, with hooks being used in the latest version. The site uses environment aliases and follows best practices such as expand/contract to deploy changes without downtime. Gatsby Bricks showcases how Contentful can be used effectively with static site generation, allowing for fast content delivery and reliable serving of images. The project also highlights the importance of choosing a CMS that aligns with your needs, in this case, Contentful's testing suite covering the whole content management workflow.