Chicago is great to visit any time of year. Come in spring or summer to soak in our two waterfronts and tackle outdoor adventures. In fall and winter, celebrate the seasons with festive events and charming holiday markets. FUN FOR ALL SEASONS City of Chicago Christmas Tree Lighting Chicago Riverwalk Arts in the Dark Navy Pier CLOCKWISE FROM TOP: RANVESTEL PHOTOGRAPHIC (2 PHOTOS); RAF WINTERPACHT; ABEL ARCINIEGA 21