Amazing website!
but the search system as a whole works really badly (for example, if I try to search for Las Meninas - Diego Velazquez, I get 347 paintings in the search output).
As a frequent user of the website I really think that the first very urgent thing that the page lacks is an advanced search.
It could allow to search by author or painting name by: genre, museum, year, material, style and technique.
If you add this option, it will be really great!