Police are still working to identify the victim and determine the cause of death, according to a release from the VPD.
A 48-year-old man was arrested in connection with the death shortly before midnight on Wednesday, police said.
Gabriola Mansion was built in 1900 by B.T. Rogers, of the Rogers Sugar company. It takes its name from Gabriola Island, the source of the distinctive greenish sandstone from which it is built.
Since Rogers’ death in 1918, the building has been used from everything from apartments to restaurants but is currently vacant — awaiting conversion into apartments once again.