Indy's German Spring Festival Weekend in German Park Continues on Friday 2 May with Walpurgisnacht and The Black Hat Society of Historic Irvington and the Sisters of the Dancing Moon, and Special Music Guests Ice Howl. Cast away Cold Weather Spirits with the Dance of the Witches, Enjoy Special MashCraft GAK Frühlingsfest Maibock or a Maibowle Wein Punch, and light the Walpurgisnacht Fire. Special Spring German Menu in the Park.