(GMT)25 JUL 2017 SGRAS:
Have you been to the Seward Street Slides in the Castro District of San Francisco? Try the famous cement slide in Seward Street Mini-Park.
Travellers wouldn't have any difficulty in finding this interesting slide.
Corwin Street and Seward Street are lined with houses and apartments. Hidden in a residential neighborhood, the slides, and adjoining park, are a small haven of fun in the big city. People use a variety of sliding materials (saucers, food trays, etc), but the cardboard would be your best bet.