Forest Park
, btwn Lindell Blvd & Oakland Ave
St Louis, MO

w http://www.stlouis-mo.gov/government/departments/parks/parks/Forest-Park.cfm
Must Do 1,371-acre park in the heart of St Louis. While you're there check out the Zoo (it's free and awesome!), the Science Center, History Museum, Art Museum (and Art Hill), The Muny, Jewel Box, Tennis Center, Boathouse, Pagoda Circle and World's Fair Pavilion -- it's all in the Park.