The Gaslamp Museum at the Davis-Horton House is the oldest surviving structure in downtown San Diego. It was once used as a military barracks, county hospital, boarding house, private residence and even has some Prohibition and espionage ties. The Museum offers guests tours of the Davis-Horton House museum and the historic district. The Gaslamp Quarter Historical Foundation preserves the history, culture, and architecture of the historic Gaslamp Quarter in downtown San Diego. Visit: gaslampfoundation.org Gaslamp Museum at the Davis-Horton House on Facebook / Instagram Hours of Operation: Tuesday- Private pre-booked tours of the Davis-Horton House Wednesday, Thursday, Friday and Saturday – 10 a.m. to 4 p.m. Sunday and Monday – Closed Parking: Metered street parking is available throughout the Gaslamp and pay lots, such as the 6th & K Parkade and the Park it on Market structures, are easily accessible.