I was riding my bike back to my sister's apartment and the GPS took me through here. I was surprised that it was cacheless! There's a lovely fountain, several places to eat, sit and people watch.
You'll need to stay around the fountain for this one--no need to go near the tracks. You could pretend you're taking an abstract picture as you snag this low-level cache. First to find gets bragging rights :-)
Vg'f nyy va gur anzr... V zrna, vs lbh xabj fbzr Vgnyvnab.