Southlake Mall in Merrillville is northwest Indiana's largest indoor shopping mall — Simon-run with anchor Macy's, JCPenney, Dick's Sporting Goods and full food court. Deep River Waterpark just north of the mall is a Lake County waterpark with slides, wave pool and lazy river open Memorial Day through Labor Day.
Star Plaza Theatre at the Radisson Hotel complex hosts national touring concerts and comedians year-round, and Bass Pro Shops Merrillville on US-30 is the outdoor-gear counterpart to Cabela's Hammond 20 minutes west.
Downtown Merrillville is commercial rather than walkable, focused on the US-30 strip. Ross Township community events and local parks provide neighborhood-scale summer activities.
More within easy reach — Indiana Dunes National Park 40 minutes northeast for Lake Michigan beaches; Cabela's Hammond 20 minutes west for the football-field-sized aquarium display; and Chicago Museum Campus 45 minutes northwest via the Borman Expressway for the Field Museum, Shedd Aquarium and Adler Planetarium. Spring opens Deep River Waterpark and Southlake Mall spring shopping, summer runs on peak waterpark and school shopping, fall pulls Southlake Mall back-to-school and Colts football, and winter drops to Southlake Mall Black Friday and holiday-shopping peak. Seasonal highlights include Southlake Mall Black Friday (November), Deep River Waterpark season (Memorial Day–Labor Day), and Star Plaza Theatre concerts (year-round). Seasonal highlights include Southlake Mall Black Friday (November), Deep River Waterpark season (Memorial Day–Labor Day), Star Plaza Theatre concerts (year-round). Merrillville rewards visits in every season, from green-season hiking and water days to brilliant autumn foliage and quiet, snow-dusted winters.