Historical markers (Filipino: panandang pangkasaysayan, Spanish: marcador histórico or placa histórica) are installed by the National Historical Commission of the Philippines (NHCP) in the Philippines and places abroad that signify important events, persons, structures, and institutions in Philippine national and local histories. The plaques themselves are permanent signs installed by the NHCP in publicly visible locations on buildings, monuments, or in special locations. Local municipalities and cities can also install markers of figures and events of local significance. Though they may have the permission of the NHCP, these markers are barred from using the seal of the Republic of the Philippines.