My youngest daughter's public elementary school not only has swings, but lots of high monkey bars, rock climbing walls (the tallest is about 8') and multi-level playground devices. It's a rather nice playground.
The local parks have some pretty intense playground equipment (how about a series of posts with platforms that you can step from platform to platform without any railings or such. Watching your 5yo traverse that will tighten your sphincter.
As for the bike thing, Thing 1 didn't get into biking much when she was first learning and eventually put the bike away for a couple years. Then, the other day, she decided she wanted to ride again. She jumped on the bike and was riding around like she never stopped. We go for rides frequently.
Chris