A medieval drawbridge that lowers into a Murphy bed is such a perfect design pairing that it's surprising we don't see it more often.
Playhouse maker TinyTownStudios built this particular drawbridge Murphy bed. You can find a few others if you hunt around online, but none with same detailed faux stonework, moss, and vines for added character. I can't help but wonder if it's sturdy enough for a younger sibling to hide up top and pelt the sleeper with foam arrows to "defend" the castle.
This is hardly TinyTownStudios' only piece of fantasy design. Over on Etsy, you can check out their Western Saloon Loft Bed Playhouse, their massive concrete animal sculptures, and a wide array of pirate treehouses.