Every year I like to share a few must-see sites during Historic Milwaukee’s annual Doors Open Milwaukee, which has quickly grown into one of the most fun and well-attended events in the city. Seeing it this way has long been one of my absolute favorite Doors Open experiences. When that new owner is a Milwaukee nonprofit that works every day to improve the lives of MPS students? There is so much history in the sprawling Pritzlaff Hardware complex – now a mixed-use facility with apartments, retail shops, a brewery, a restaurant, events space and more – that it's a must-see stop at Doors Open. Clayborn Benson's labor of love for decades, the Wisconsin Black Historical Society has information and eye-opening displays, archives and a giant events space in a complex that includes a former movie theater, neighborhood library and firehouse.