Mudejar Architecture (Sahagun) 64 Santiago and Its Cathedral 82 Church of Santiago, Corunna 92 General View of Mondoñedo 96 Mondoñedo Cathedral 98 Northern Portal of Orense Cathedral 116 Tuy Cathedral 128 Oviedo Cathedral 140 Cloister of Oviedo Cathedral 144 Apse of San Isidoro, Leon 164 Burgos Cathedral 180 Crypt of Santander Cathedral 190 Cloister of Nájera Cathedral 202 Santa Maria la Redonda, Logroño 204 Western Front of Calahorra Cathedral 207 Cloister of Soria Cathedral 212 Palencia Cathedral 226 Zamora Cathedral 238 Toro Cathedral 248 Old Salamanca Cathedral 260 New Salamanca Cathedral 266 Cuidad Rodrigo Cathedral 272 Façade of Plasencia Cathedral 288 Western Front of Valladolid Cathedral 300 Tower of Avila Cathedral 310 Segovia Cathedral 316 San Isidro, Madrid 326 Alcalá de Henares Cathedral 332 Toledo Cathedral 360 _PART I_ _Introductory Studies_ _The Cathedrals of Northern Spain_ I GENERAL REMARKS History and architecture go hand in hand; the former is not complete if it does not mention the latter, and the latter is incomprehensible if the former is entirely ignored. The following chapters are therefore historical and architectural; they are based on evolutionary principles and seek to demonstrate the motives of certain artistic phenomena. Many of the ideas superficially mentioned in the following essays will be severely discussed, for they are original; others are based on two excellent modern historical works, namely, "The History of the Spanish People," by Major Martin Hume, and "Historia de España," by Señor Rafael Altamira. These two works can be regarded as the _dernier mot_ concerning the evolution of Spanish history. Unluckily, however, the author has been unable to consult any work on architecture which might have given him a concise idea of the story of its gradual evolution and development, and of the different art-waves which flowed across the peninsula during the stormy period of the middle ages, which, properly speaking, begins with the Arab invasion of the eighth century and ends with the fall of Granada, in the fifteenth.