A shrine

 I found a Shinto shrine with a large open area around it.

The doors to the altar were closed so I was unable to see what was enshrined. However, the branches in the vases were fresh so it was clear that someone was taking care of the place. Also there was an offering of a small bottle of sake, rice wine. These small bottles are called 'one-cup' and are the same size as a normal serving that you would get in a bar or restaurant.