In 1920 , Roque Ruaño was assigned to draw up plans for the UST Main Building to be constructed at the Sulucan property of the Dominican Order . During the years 1922 and 1923 , the plans were finally completed . However , some fine tunings may have been made on the design criteria as a result of the new lessons learned from the Great Kantō earthquake of September 1 , 1923 which flattened Tokyo and Yokohama . Eventually , construction began in 1924
Great Kantō earthquake
1923 Great Kantō earthquake
University of Santo Tomas Main Building