To commemorate the event, now known as Araw ng Kalayaan or Independence Day, a national holiday, the Philippine flag is raised here by top government officials on June 12 each year.
It was first flown during the Battle of Alapan in Imus two weeks earlier on May 28, 1898 (now celebrated as Philippine National Flag Day each year).
The Philippine national anthem was also first played on the grounds by the marching band of San Francisco de Malabon (now General Trias) but as an instrumental music; the lyrics were not written until 1899 by José Palma.
The same year, the government declared the mansion as a National Shrine on June 18 through the Republic Act of 4039 signed by President Diosdado Macapagal.
[2] The house features secret passages and hiding places for documents and weapons and is filled with antique furniture and decorated throughout with motifs of the Philippine flag and other national symbols.
[9] Located on the second floor is the grand hall, a large meeting room with the historic front window from where the Declaration of Independence was read.
Also on this level is the bedroom of Aguinaldo, the kitchen, a conference room, and a partially covered terrace on the western end of the building.
A covered balcony (azotea) at the end of the wing was christened by Aguinaldo as Galeria de los Pecadores (Hall of the Sinners) as military plots against the Spanish authorities were planned there.