The Arch of the Centuries (Filipino: Arko ng mga Siglo, Spanish: Arco de los Siglos) is a triumphal arch at the Plaza Intramuros of the University of Santo Tomas (UST) in Manila, in the Philippines that stands meters away from the university's Millennium Gate along España Boulevard. Half of the current structure, the side facing the UST Main Building is the ruins of the original Intramuros arch while the side that faces España Boulevard is a replica. The arch was formerly the original entrance to the university when the campus was still in Intramuros during the years from 1680 to 1941.It was declared by the National Museum as a National Cultural Treasure on January 25, 2010.