Every place eventually becomes different from the memory you carried away from it.

The version of a place you carry away is fixed at the moment of leaving, and the real place keeps going without you. Shops close, people move, the atmosphere changes, and returning means meeting something that no longer matches your copy. The disappointment is not really about the place, it is about the gap between a memory and a present.

Go back expecting a different place rather than the one you remember. Then you can meet it as it is. The memory remains yours regardless of what happened to the streets.