The palace is considered the 'best paved house-palace in Europe' owing to its collection of Roman mosaics, which paved practically the whole of the ground floor. There is also a collection of well parapets, vases, amphora, columns and sculptures of incalculable worth. On the upper floor you can visit the residences previously inhabited by the Countess and her descendants, up to only a few years ago; extremely well-preserved, they are today filled with ornaments and furniture from all over the world, priceless artwork by Van Dyke, Bruegel, Alonso Cano, among others, as well as collections of porcelain and glass.