Giving directions is not always useful :)

- Hey, you know where Wrigley Field is?
- Yeah. It's right there.
- Yeah, I know. This is Wrigley Field but I'm looking for Wrigley Field.
- It's right behind you.
- Yeah. Well, if you see it will you just let me know?
- Sure. Good luck.
- Thank you.
- Barber. Barber (?)

The question "you know where W.F. is?" is a colloquial construction. In correct standard English we should say "DO you know where W.F. is?", but in colloquial English we can drop the auxiliary DO.