Chicago's beer landscape reimagined itself three times in a century. Prohibition shuttered 59 breweries by 1920, leaving only Sieben's to survive as a legal near-beer producer. The city's Germanic brewing tradition — once anchored in neighborhoods like Lincoln Avenue and North Avenue — vanished almost completely. By 1978, Chicago supported just two industrial breweries. Then craft fermentation returned in 1988 when Goose Island opened on North Clybourn Avenue, and the city now sustains more than 160 production breweries within its metro boundaries. Chicago walking brewery tours emerged as the craft movement matured in the 2010s, mapping pedestrian routes through neighborhoods where three or four taprooms cluster within a half-mile radius. Wicker Park, Logan Square, and Ravenswood hold the highest brewery densities. Most guided walks cover 1.5 to 2 miles over three hours, pausing for 20-minute tastings at each stop. Guides explain regional ingredients — Midwestern two-row barley, Michigan hops, Great Lakes water chemistry — and trace the city's transition from lager dominance to IPA experimentation. Some routes include distilleries or cider houses to illustrate Chicago's broader fermentation economy. The breweries themselves occupy repurposed industrial architecture. Half Acre's Lincoln Avenue flagship fills a 1930s warehouse with exposed steel trusses and a 60-barrel brewhouse visible from the taproom. Revolution Brewing converted a former metal-plating factory in Logan Square, retaining brick walls and adding a rooftop hop garden. Marz Community Brewing operates from a Bridgeport garage bay where murals by local artists wrap fermentation tanks. These spaces reflect Chicago's industrial past while serving as neighborhood gathering points. Taprooms often host live music, food pop-ups, and homebrewing workshops. Chicago's beer culture intersects with its immigrant history and neighborhood identity. German and Czech brewing traditions shaped pre-Prohibition recipes, while newer breweries draw on Mexican, Polish, and Korean ingredients. Tours contextualize these layers, explaining why pilsners still anchor many taproom menus alongside hazy IPAs and bourbon-barrel stouts. Afternoon timing aligns with brewery operating hours — most taprooms open at noon and hit peak energy by mid-afternoon when sunlight fills the spaces and brewers finish morning production runs.