From WikiPilipinas: The Hip 'n Free Philippine Encyclopedia
The Crisologo Museum or Vigan House National Historical Institute Branch is a Philippine Museum located in the town of Vigan in the province of Ilocos Sur. The museum consists of the preserved ancestral home of statesman Floro S. Crisologo and houses the family’s memorabilia and private collection of religious figures as well as some permanent exhibits that have to do with Northern Luzon’s history, ethnography, archaeology, and natural history. The museum continues to be managed by the Crisologo family, a political clan, along with the National Historical Institute under the auspices of the National Museum of the Philippines. It is open from 9:00 am to 5:00 pm, Monday to Saturday. It is also known as Vigan House, Crisologo House and Memorabilia, and the Vigan National Museum Branch
The museum used to be the residence of Floro “Flor” Crisologo and his family. The Crisologo clan is one of the principal families of Vigan and Flor Crisologo was a congressman who worked towards the ratification of the Tobacco Law and the establishment of the Social Security System. On October 18, 1970, Crisologo was standing in a communion line in the Vigan Cathedral when a lone gunman entered and shot him in the head. The assassin escaped during the panic that ensued and the murder remains unsolved to this day, but it is generally believed to have been politically motivated.
In memory of Crisologo, his family turned his ancestral home into a museum which maintains the statesman’s memorabilia, with particular focus on an exhibit of items relating to his murder.
 The museum building
The Crisologo mansion consists of a large, old, solidly-built 2-storey structure with a ground floor made of brick. The walls of the ground floor are thick and the windows have iron and steel grills. On the other hand, the upper floor is made of concrete and hardwood and has colintipay windows.
The house contains a collection of heirloom furnishings of the type that are typically found in Vigan ancestral homes, including the desk used by Crisologo during his term as congressman. It also houses Governor Carmeling Crisologo’s collection of santos. The memorabilia of the family patriarch, Floro Crisologo, can be found in the museum as well.
The central display of the museum focuses on the patriarch’s 1970 assassination. It includes the unwashed pants and shoes that Crisologo had been wearing when he was shot, with his bloodstains still visible. Black-and-white photographs of the incident are displayed above the clothes. There are also scrapbooks of clippings about the members of the Crisologo family starting from the 1950s.
As the museum also serves as a branch of the National Historical Institute, there are exhibits of documents and artifacts that relate to the geology, zoology, archeology, ethnography, and history of Vigan and of the entire Northern Luzon area.
The Crisologo Museum is found on De Los Reyes Street in Vigan, Ilocos Sur, the street after Crisologo Street coming from the Vigan Cathedral.
- Philippine Culture and Information. “Museums in the Philippines.” 
- ”Vigan House National Historical Institute Branch.” In Global Pinoy. 
- Severino, Howie. "Murder in the Cathedral and a Bloody Exhibit." In Sidetrip.