Skylands is a 1,119 acres (4.5 km²) estate property located in Ringwood State Park in Ringwood, New Jersey, a borough in Passaic County in the state of New Jersey. The Skylands property consists of the historic Skylands Manor mansion, The Castle at Skylands Manor and the New Jersey Botanical Garden; the botanical garden is and it is open to the public year-round. The Skylands property is within the Ramapo Mountains and it is maintained by the Skyland Association. The property is marketed with the garden as New Jersey State Botanical Garden at Skylands.