For this purpose, he often used the material that was most common in the nearby environment, such as the slate of Bellesguard and the grey Bierzo granite in the Episcopal Palace, Astorga.
Untuk mencapai tujuan tersebut, ia sering menggunakan bahan yang paling banyak ditemukan di lingkungan tersebut, misalnya sabak Bellesguard dan granit Bierzo di Istana Episkopal, Astorga.