Crowds are gathering in downtown Minneapolis this evening for the kick-off of the 64th Aquatennial. The main event tonight is the Block Party featuring music by reggae star Ziggy Marley. The Aquatennial is making efforts this year to update its image and better reflect the diversity that exists in the city. But traditions like parades, milk carton boat races, and the crowning of royalty remain central to the festivities. The history of the Aquatennial is on display at the Hennepin History Museum in Minneapolis. I took a tour of the exhibit this morning with Pam Albinson--the Queen of the Lakes from 1962.