sentences:  The plaza is flanked by important buildings, among them the former Tribunals Palace, now seat of the Faculty of Law of the National University of Rosario and of the Dr. Ángel Gallardo Provincial Natural Sciences Museum, and the former headquarters of the Santa Fe Provincial Police, now a delegation of the provincial government and host to a small museum of the last dictatorship (Centro Popular de la Memoria).The land where the plaza is located was donated by Marcos Paz in 1857, and was much larger than at present (extending several blocks to the south).Its purpose was to serve as a marketplace, where cargo wagons that came and went between Rosario and other cities farther away from the littoral would stop to load and unload.