International Museum Day Guide: Stamps, Plaques, and More! (Animal Crossing: New Horizons)
International Museum Day will be held from May 18 to May 31. Interacting with Blathers will get him to explain the event; in the three original sections of the museum (Bugs, Fish, and Fossils), Blathers has set up three stamp stations. Collect them all to receive Bug, Fish, and Fossil Plaques.