Isezaki Mall

I wouldn’t go out of my way to visit this shopping street, but if you’re in the area and wandering around, why not? It’s got supermarkets, coffee shops, restaurants, etc. – and a large Uniqlo, on top of which is a larger Daiso (100-​yen shop). Nothing that can’t be found elsewhere, but if the weather is nice, it’s a nice enough street to stroll down. I recall hearing an informational announcement one morning that said this is the oldest (or among the oldest) «pedestrian paradises» (歩行者天国) in Japan. I’m not sure where it’s true, but it almost certainly has a decades-​long history as a car-​free zone.
While they’re still ripping down historic buildings little by little, there are some great modern buildings left from the 1920s and 1930s along and near this street you can find if you look up enough – plus a couple reproductions replacing buildings that should have been preserved. Check out the adornments on the multistory building on the right of the entrance as well as the funky windows on the KFC on the left. Also look for the Fuji-​ya building with giant glass block windows. Many of these buildings (all?) were used by the US military during the Occupation, which had a massive presence in the central part of Yokohama.
If you want a more traditional covered shopping street, check out Yokohama Bashi or Rokkaku Bashi. If you want a more posh shopping street, check out Motomachi.