A
LUTHIER is the person who makes and repairs string instruments.
These days we are talking about the luthier's job in our days and also remembering the most popular luthier of all times:
Antonio Stradivari
In the
Royal Palace in Madrid you can visit one of the only complete surviving collections of Stradivarius in the world:
"Colección Palatina" or
"Colección decorada"
It consists of five instruments: two violins, one viola and two cellos (one of them is not decorated) and they were made in 1696.
Check the following
video about the luthier who is in charge of keeping the collection in a good condition.
Link 1