The 650-year-old Jagiellonian University moved in to the building at the corner of the Jagiellonska and Sw. Anny streets in 1400, when King Vladislav II Jagiello bought the house with funds his late wife, queen-saint Jadwiga, had earmarked for the renewal of Krakow’s alma mater. Thus the Grand College, or Collegium Maius, was born. The oldest college of the Polish oldest and best university, was rebuilt by the end of the 15th century as a splendid late-Gothic edifice around a vast courtyard with surrounding arcades and a well of 1517 in the center. Professors lived and worked upstairs, while lecturing downstairs. In the 1490s they had Copernicus among their students, and the astronomer that revolutionized entire European science remains the most illustrious of Krakow university’s graduates together with Pope John Paul II. Over centuries a whole university quarter has arisen around the Collegium Maius, while the old college became first the university library and then the university museum rich in unrivaled exhibits.