This wooded Pittsburgh oasis is a nostalgic treat. Though the main attractions at this former railroad yard are its 15 waterslides, the property also features a wave pool, a lazy river, a pool with a mushroom-shaped waterfall, and shallow play areas for young ones. Plus, family-friendly games, activities and more are available every Friday from mid-June to mid-August. Come for lounging, heart-pumping fun and bingeing on loaded Potato Patch fries – a local specialty.