In Central Mexico, the Aztec emperors built many palaces in the capital of their empire, Tenochtitlan (modern-day Mexico City), some of which may still be seen. On observing the great city Hernán Cortés wrote, "There are, in all districts of this great city, many temples or palaces... They are all very beautiful buildings. Amongst these temples there is one, the principal one, whose great size and magnificence no human tongue could describe... All round inside this wall there are very elegant quarters with very large rooms and corridors. There are as many as forty towers, all of which are so high that in the case of the largest there are fifty steps leading up to the main part of it and the most important of these towers is higher than that of the cathedral of Seville..."