A private island only minutes by boat to Saltspring Island, one of the principal Gulf Islands of BC. First Sister Island (also known as Castle Island) is fairly level, with two beaches. Cedar, Douglas Fir, Arbitus and Gary Oak trees cover the island, which can be explored via a network of walking trails. With its deep water moorage and an 80 foot (24 m) by 12 foot (3.6 m) dock with aluminum ramp, First Sister Island is ideally set up to act as a base for the excellent fishing and diving opportunities its location affords.