A very good collection of traditional masks. Matnagiayboi.com is famous for its traditional masks. We also got to see the workshop and people carving, painting and decorating the masks. Great art work!

A collection of traditional masks . So many different traditional masks which are unique to the city of Hanoi.

They have a good collection, little better than the rest of the shops. They are reasonably priced too! I bought a few from them myself.