Harbor District is celebrating the 10th anniversary of Harbor Fest with this year’s theme, What Lies Beneath — an exploration of the hidden wonders of Milwaukee’s waterways. The free, all-ages community event features live music, food trucks, interactive art, and boat rides along the Inner Harbor. Featured experiences include an exclusive open house at UW-Milwaukee’s School of Freshwater Sciences and Sturgeon Fest with Riveredge Nature Center, where guests can release a baby sturgeon into the Milwaukee River. There is so much to explore at Harbor Fest 2026!