நிலை or Nilai :-
This is the entrance design in the main door. The "Nilai" shows the grandeur of a someone's home. These are also done in the main rooms entrance too. Especially in the 1st "kattu" or கட்டு or the main "Valavu" , the rooms are the main அறை, for which they decorate with such an artistic Nilai.
Normally they depict a scene from Hindu mythology. Will follow this with more such closeup's on the Nilai.