This landmark location is once again open for business, bringing back fond memories to long time residents and visitors! The Lighthouse Diner opened in Jupiter for the first time almost 60 years ago. Now under new ownership, you'll find that we're not your typical diner. We feature everything from burgers to southern country cooking. We're sure to please, as you can expect to receive affordable, high quality food along with fast and friendly service. Serving breakfast, lunch and dinner all day.