The Fourside Dinosaur Museum is a location in EarthBound in the city of Fourside. It costs $5 per person to enter. Inside is a single giant dinosaur skeleton. An academic researcher, Mr. Spoon, works here. A manhole cover in a backroom is the entrance to the Fourside Sewers and by extension, Magnet Hill.
Like all major buildings in Fourside, the Dinosaur Museum has a Moonside counterpart. In Moonside, the building is much smaller and lacks the back room were the Fourside Sewers could be entered. It, like everything in Moonside, has a strange multi-colored neon outline.