that has some doors always open caught my attention, that is not something I see elsewhere.

Definitely, it is rare and you won't see such kind of exterior somewhere else except in Europe. Europe is known for history and architecture so probably somewhere this kind of exterior can be seen, but this kind of view is rare...

I suppose it's because of the symbolism, it's like saying that 'being in the night, we prepare for the dawn'.

Exactly...

As for the restaurant, I must say that I thought from the photo that the portions were generous :) I would like to eat in a place like that.

The food was really good and tasty and the portion is admirable, one fried rice with a drink is enough for lunch for an adult... And also for fried rice and a drink, you are spending less than 10 euros...