There’s a new museum in town, a hidden gem. It’s for anyone who’s stood at a fence at an airport, watching planes take off and land, just for the thrill of it. The Aviation Museum on the Beach in Juno Beach is filled with more than 1,000 scale models of commercial aircraft — suspended from the ceiling as in flight, standing ready for takeoff on the dozens of shelves, and hovering over the room on giant, sweeping stands.