Animal Crossing: New Horizons/International Museum Day

The International Museum Day is an event held from May 18 to May 31. The fish, bug and fossil galleries in the Museum will each have three stamp stations. To get a stamp, find the station and interact with it. It will tell you a summary about the section you are in and then you're free to stamp your card.

Every island will have their stamp stations in a different part of the museum. There are designated spots where the station may appear and the stamp station locations are chosen randomly from those designated spots. Every day those stations change meaning you get a new stamp card and are able to interact with those stamp stations again.

Completing the Bug, Fish, and Fossil stamp cards rewards you with the Bug Plaque, Fish Plaque, and Fossil Plaque respectively. To claim your prizes, talk to Blathers once you have collected the three stamps from one of the sections and he will give you the corresponding plaque. You are able to collect multiple of these plaques if you complete the new stamp card you are given every day.

Bug Section
The stamp stations may appear in the following parts of the Bug Section: