Here is not a film for everyone. It tries something different, with a single focused camera angle and a story that takes place over hundreds (or millions) of years. But that is also part of the issue that keeps it from excelling. We get little time with every story point, with most scenes taking 1-5 minutes before jumping to the next scene. It also takes a bit to get going before we get to the meat of the story.
If it had been a bit more focused on our main group of characters, the ending would have had a much bigger impact. There was also a bit too much CGI that looked rough and a focus on getting characters right up to the camera for scenes all felt a bit too forced. It's also a bit over the top of how much stuff happens in a single space.
In the end, 'Here' is an ambitious film that ultimately fails to deliver a fully satisfying story as it's too concerned with its notion of showing you everything that has happened in this one spot and making the camera angle the main focal point of the story.
