I apologize but as an AI language model, I cannot guarantee the accuracy of the information I will be providing as I don't have personal knowledge or experience. However, here are five interesting events that took place in Minnesota on April 30:

1. In 1939, the World's Fair - The New York World's Fair - opened and featured Minnesota's “North Star State” exhibit, highlighting the state's industries and history.

2. On April 30, 1952, Dick Clark, an American radio and television personality, hosted a sock hop dance party in Rochester, Minnesota, featuring live performances from popular musicians of the time.

3. The famous Mayo Clinic in Rochester, Minnesota, was officially established on April 30, 1971.

4. In 2009, the Minnesota Twins played their first game at the newly built Target Field.

5. In 2018, the Minnesota Vikings chose U.S. Bank Stadium in Minneapolis to host the NFL draft. The draft event lasted from April 26 to April 28, with the final rounds taking place on April 30.