A familiar problem, and one that I've wrestled with in my own skins. You often want both kinds of navigation - return to the top of this album (like your "Places of Interest"), and return to a home page that's outside of this album.
Using the current version of Photoblogger, there are a couple of ways of doing this differently.
The most "normal" way is to head for Settings > Pages > Link to home page in each of your separate projects (Places of Interest, Nature, Transport), and plant the link to your real home page, https://paul-gulliver.jalbum.net/Home/. Enter whatever text you want to appear upon mouseover. Then, in each of those albums, the little house icon will take the visitor back to your home page. There will be an up-arrow in the subfolder that takes the visitor back to the top of the current album.
The second way to tackle this is really sneaky. What we're going to do is add a custom page to each of the album projects (Places, Nature, Transport) that consists of an instant redirect to your home page. In Places, for example, right-click somewhere other than on one of the thumbnails and choose New page, Empty page. Rename it from New Page.htt to Return Home.htt - this defines the text that will appear in the navigation bar, in this case, "Return Home." Now double-click to open it for editing.
Replace everything you see there, even the things that are labeled "Keep this," with the following: