The doors below are closed. In fine print you may be able to read at the bottom of the first door that this restaurant is closed on Sundays. I'm always surprised when restaurants are closed on Sundays but ones that cater to the business crowd for lunch often are where I live.
You probably won't be able to read the little sign on the next door but it says to use the other door. This door is always closed.
Below is another door which is always closed and has a sign about using another entrance.
Click for the home of photohunters.