Asakusa is a bustling part of Tokyo, popularized by the Kaminarimon Gate that leads to the Senso-ji (oldest temple in Tokyo). Many tourists also go there for shopping at Nakamise Street, a line of shops right past the gate. There, you can find traditional souvenirs such as masks, clogs, and cloth. Running perpendicular to Nakamise Street is Shin Nakamise (or “New” Nakamise), which is a covered arcade of stores. Lots of great snacks such as senbei and taiyaki (I wrote about it here).