Francis Darke's philanthropic efforts greatly enhanced the City of Regina. He donated the money to build the Darke Hall for Music and Art in 1929. Darke Hall quickly became a bastion of culture for Regina and many musical and theatrical productions took place there over the years. It also served as the home of the Regina Symphony Orchestra for 41 years. Darke also donated the church bells that currently reside in the Knox-Metropolitan United Church. The bells, which were donated in 1927, were given as a memorial to Darke's son Clifford, who had died in an automobile accident in 1926.
Darke died in 1940 of a heart attack. He was laid to rest in the Darke mausoleum, one of the few mausoleums in Regina.
Darke’s legacy still lives on in the city, however. It is said that Darke's spirit has been seen in and around Darke Hall.