Arkong Bato
- This stone arc, found along M.H. Del Pilar Street, was built by the Americans in 1910, and served as the boundary between Rizal and Bulacan province. Before the existence of MacArthur Highway and NLEX, Valenzuela was already the gateway to the north, albeit with M.H. Del Pilar being the main road to Northern Luzon. Today, the Arkong Bato marks the boundary between Barangay Santulan in Malabon and the arch’s namesake, Barangay Arkong Bato in Valenzuela.
Bell Tower of San Diego De Alcala Church
- The belfry, or bell tower, of San Diego de Alcala Church is over four hundred years old, and is a cultural and religious relic of the bygone Spanish era. The tower, along with the entrance arch, is the only remaining structure of the original church built in 1632. The main structure of San Diego de Alcala was destroyed during Japanese rule and has since been rebuilt and renovated, serving as an aesthetic counterpoint to the largely unchanged tower.