This site includes a custom block called “Big Feature”, a concept you may be familiar with from the Podcast Network. Unlike there, this block can be included anywhere, and the “feature” blocks have any image and link you want.

Once you include a Big Feature block on your page, simply click the boxes to select an image, and the block options allow you to set “alt” text and link the box wherever you like. As noted in Best Practices, “alt” text is important, and since these links have no context without it, the Big Feature will warn you with scary red notices if you forget.