In 1971, the Aguirre Group acquired St. Peter Memorial Park, a 20-hectare memorial park located in Tandang Sora, Quezon City. It was later renamed as ? Himlayang Pilipino Memorial Park ? in line with the idea of converting the area into a historical site where the remains of well-known Filipino heroes and martyrs would rest, and where monuments and structures depicting Philippine legend and history would be showcased. Himlayang Pilipino, Inc . (HPI) was incorporated to manage Himlayang Pilipino Memorial Park .