Banning Harbor or Isthmus Cove is located the leeward (northern) side of Two Harbors, colloquially known as "The Isthmus", a small unincorporated community island village on Santa Catalina Island off the coast of Southern California.
Two Harbors is the second center of population on Santa Catalina Island, besides the city of Avalon. It is mainly a resort village. It has only one restaurant, one hotel, and one general store. The village has about 150 permanent residents who live on the isthmus year-round. One notable feature was the little one-room schoolhouse which closed in 2014.
Two Harbors is a small island village located approximately 37 km (23 miles) from San Pedro Harbor on Santa Catalina Island. On the island's narrow isthmus, it is located about 18 miles from the only city in the Island, Avalon. It is named for the two harbors separated by the 770m section of land separating the leeward (northern) Banning Harbor and Catalina Harbor (or Cat Harbor) on the windward (southern) side, which together almost cut off the northwestern sixth (31.7 km²) from the main part of the island.