You could do like a big rope bridge, where you build a long two tier cliff between two points, and surround the bridge with water. It takes a little bit of effort compared to some easier terraforming builds, but I think it looks really neat! There are plenty of tutorials for doing this on Youtube if you just have a quick search, as well as some wooden bridge pathing and other floors that might go well with it. You can also play around with the idea and make some big rocks coming out of the water, or have little peninsula's (little islands) coming out of the water as well, so it's not so much a set in stone design and lets you have some fun personalising it to your taste. You could even have a waterfall on either sides of the bridge so it looks like a long cliff that just happened to be there, if you're more into a natural island theme over a big man-made bridge. So yeah, if you're down for a big build, then definitely give it a try!