Philly visitors with young children should not miss this unique, historic (and free) play destination. Inside the large playhouse (for children 5 and younger), kids can choose from room after room of themed play equipment. Outside, the 6-acre playground (for children 10 and younger) features over 50 types of play areas, the highlight of which is a giant wooden slide that is over 100 years old. Opened in 1899 and recently restored, the playhouse was designed specifically as a play space for children and features a three-story open layout. Among many other activities, kids can ride tricycles, play on a train, and put on a puppet show. Be sure to check Smith’s website or Facebook page before you go, to make sure the playground isn’t closed due to inclement weather or excessive heat.