She established a scriptorium for producing and reproducing books. It is the only known instance of a royal scriptorium in Northern Europe at that time. Saints' lives and romances were the common reading material of the day, but Eleanor wanted more.
When her mother died in 1279 and Eleanor inherited the title Countess of Ponthieu, she had a romance written about a fictional 9th century count of Ponthieu. She had an Arthurian romance written with a Northumbrian theme. The Archbishop of Canterbury wrote a treatise on angels at her request. Pictured here is the Alfonso Psalter, which she had written for her son Alfonso (1273 - 1284); more about it here.
She had tiled bathrooms and piped water to some of the royal residences to match what she was accustomed to in Castile. She increased the use of tapestries and carpeting. These were initially criticized as Spanish extravagances, but became a popular fashion for those who could afford them. She also liked fancy tableware like knives and forks, but the forks may have been only for serving from a platter, not for individual use.
Another Castilian practice she brought to England was water features in gardens, along with fish ponds, aviaries, and gazebos. Household accounts show her ordering olive oil, French cheeses, and fresh fruit from the Mediterranean, as well as food and other items from Acre, because of her time there on Crusade with Edward.
She founded several priories, and gave financial support to Oxford and Cambridge universities.
One of the immediate impacts made by Eleanor and Edward—and partially for their benefit—was arranging advantageous marriages for their children. Eleanor bore at least 16 children to Edward. Only a few survived to adulthood, but they helped tie the throne to powerful relatives. I'll talk more about that tomorrow.