Edited sentence: De Anza lead a second expedition through the area on December 31, 1775.He named the area "Valle de Paraiso'', or Valley of Paradise.He, and others in his contingent, described the area as beautiful spot as fragrent with sage and rosemary, and having rich grasslands for their horses and cattle to graze.On March 20th, 1774, Juan Bautista De Anza, leading an exploratory expedition to find a good land route from souther Mexico to Alt California, reached the area today known as Riverside, California.They spend New Years eve on the banks of the Santa Anna River, and crossed the river the following day.This expedition was a colonizing expedition headed for Monterey.This was the first official record made of what was to become the city of Riverside