Sisters of Mary Falls is a 20-metre-high (66 ft) talus ribbon cascade waterfall found on private property, (private with permission to access), in Ancaster, Hamilton, Ontario, Canada. Nearby attractions include the Bruce Trail, Dundas Valley Conservation Area, Hermitage ruins, Old Mill Restaurant, Griffin House, Fieldcote Memorial Park & Museum, Royal Botanical Gardens, Dundurn Castle, Crooks Hollow Conservation Area, Canterbury Falls, Christie Lake Conservation Area, Tiffany Falls, Tiffany Falls Conservation Area, Iroquoia Heights Conservation Area.