Headshops around Philly

Can anyone help me with a headshop that is in or around Philadelphia(doesnt have to be close)?

Thanks

Yeah, I'd like to know of any, too (I don't live there, but I'll probably be there for a month during the summer).

Wonderland on Walnut

Artifax on Cottman Ave across from Rosevelt Mall, South St. has alot of small places (Jamaican "culture" shops) Wonderland at 20th and walnut.