Try Millenium Park...
This could just be the city’s finest freebie, a 24.5-acre park dotted with monumental public art, from Jaume Plensa’s Crown Fountain, Anish Kapoor’s Cloud Gate (known locally as ‘The Bean’) and the peaceful Lurie Garden. Free concerts take place at Frank Gehry’s Jay Pritzker auditorium.
...or dive into the other parks
There are other more traditional offering than Millennium Park. Apart from its myriad plant and bird species, Chicago Botanic Garden allows for mile upon mile of skyscraper-free strolling, whilst Garfield Park Conservatory is now back up and running after a 2011 hail battering.
Then there’s the famed Lincoln Park Zoo, if you like zoos. If you don’t, head for the 1895 Lincoln Park Conservatory at its north end instead – the flowers really don’t mind being cooped up in its four handsome greenhouses (Orchid House, Palm House, Fernery, and Show House). For the really ruthless, the summer farmers' market is bound to throw up plenty of samples.
Over in Grant Park, from around April to mid-October, the 1927 Buckingham Fountain throws out an hourly water display – one of the world’s biggest – that lasts twenty minutes. Go for an evening show (until 11pm), when the water is accompanied by lights and music.
Board the L Train
OK, so this last one might not be strictly free but the orange line downtown towards Midway on the L is fantastic, giving the best view of the city’s buildings – a lot of bang for your buck.
What are your tips for enjoying Chicago for free?