Paper Shops

Does anyone know of any great paper shops? It doesn't matter where they are. (I like to travel!) I recently visited my hometown of Portland, OR and discovered a few. One wasn't even a paper store, but they had awesome complimentary gift wrap and so I asked to buy a few sheets. Anyways, if you know of any cool paper stores, let me know! Chains are fine, but mom-and-pop shops are my favorite!