There are some kind of walls with letters on it, that shows the name of the place.
I have these examples here:
I don’t know the name in English, and I haven’t found a word in Spanish for this.
These are called monument signs or ground signs. For a long time, there was only an advertising=totem tag for a pole sign or pylon sign, and only if it was being used to advertise a business. However, a recent discussion about signs with a political message resulted in a new man_made=sign tag that isn’t limited to a particular form factor or message. To indicate that the monument sign isn’t supported by a pole, you could try support=ground/pedestal or location=surface.
I’ve created the man_made=sign wiki page but I’m wondering if advertising=sign wouldn’t be more relevant with, perhaps, a complementary tag like message=*.
I’m wondering the same thing for this case as for the recent discussion about political sign…