The first Spanish soldiers arrived in the city on November 15, 1533. Spanish "conquistador", or "conqueror", Francisco Pizarro, however, officially refounded Cusco on March 23, 1534, naming it the "Very noble and great city of Cusco". The many buildings constructed after the Spanish conquest have Spanish influence with a mix of Inca architecture. The Spanish made a new city on the foundations of the old Inca city, replacing Incan temples with churches and palaces for the Spanish. In the colony, the city of Cusco was very rich, thanks to the agriculture, cattle raising, mining and trade with Spain. Many churches and convents were built, and even a Cathedral, and the Universidad Nacional San Antonio Abad del Cusco.