Going back to places in Fallout 4 during a second playthrough can be fun just by redoing certain activities. The game is full of details, and many players tend to focus on the main storyline the first time, which means they might overlook side quests, hidden items, and other important features. They also may just run through areas without realizing how special they are.

https://screenrant.com/fallout-4-locations-worth-revisiting-list/