The Rockefeller Garden in Seal Harbor, ME is only open for a few days each summer—and well worth making a trek for. The setting is a small harbor town on the rugged coast of Mount Desert Island, where John D. Rockefeller Jr. kept a summer home with his wife Abby in the 1920s and ‘30s. The juxtaposition of these blustery surroundings with the property’s formal gardens—which are tucked into a wooded clearing—is just part of what makes this garden special. There’s also an enormous variety of landscape elements brought together here – including a moon gate, a bottle gate, pieces of Asian sculpture, and many formal flower beds and borders. I found the abundant lilies and delphiniums especially dazzling.