TTO Noordsee is a small heritage tram museum in De Panne focused on Belgium's coastal tramway. Its main draw is not a large static collection but periodic vintage tram excursions along the Kusttram route.
Check the schedule before planning around it, since the historic rides do not run every day. For rail fans or families already on the Belgian coast, it adds a different angle to De Panne's beach and theme-park sights.