The facade of traditional shops are uniqe and quite different from modern-times shops.
The shops reside on the first floor and upper floors are typically for residence. Sometimes shop owners live there and sometimes upper-floor residents are completely different.
What I always fascinate with is the signage of the shops. In many cases, the shops have built-in signs on the walls of the shops and they always have one-of-a-kind design.
Here are some examples I visited recently.
For example, if you look at the facade of Houzan, the liquer shop in Zoushigaya, the name of the shop Houzan is sculpted (the circled part in the photo below left). Kikumi Senbei, the Japanese rice cracker shop has a very gorgeous looking signage hanging on the roof.