Visiting a photography location more than once seems rather tedious to some. But there a lots of good reasons to take a second trip to a location.
Obviously there can be different light conditions which can radically change your visit & photos. In fact visiting at a different time of day is a good idea. And there also may be areas you didn't notice or explore fully the first trip. Or perhaps there was one area you wish you could have spent more time at, but didn't. Last but not least, you may just have different lenses or equipment to use.
Apart from those obvious reasons, revisiting often makes you work harder the second visit, either by improving the execution of ideas you formed the first time or looking for new ways to shot your subject.
To assist me I often go over the older photos I shot, analyzing areas of interest and looking for areas of improvement. I found I can't get enough practice on the execution of photography. If I find a photo that had a good idea but I failed to execute properly, I'll focus finding a better method to capture the idea.
On the other hand, if I like what I shot I'll practice looking for new ideas. This is fun because I don't get bogged down with technical details. Using this thought process, I often shoot less and focus on more abstract subjects/ideas.
Either way I find revisiting is helpful to keep both the mind & eye sharp.