In 2014, City Hall’s western-facing front yard transformed from a concrete sweep to a $55 million multi-use park, complete with tree groves, benches, a cafe and areas for outdoor events and performances. A large programmable fountain offers children a place to romp and splash in warm weather. During the winter, an ice rink brings skaters to the park. The site’s Greenfield Lawn provides a place to relax, and sloping glass roofs lead to the major transit hub below the park. 15th & Market Streets, (215) 440-5500, dilworthpark.org