While the heart of Savannah throbs day and night, visiting yachtsmen can escape to the relaxed ambience of the Old South just a few miles farther south, at Isle of Hope. The docks of its only marina nestle under a low bluff where giant live oaks shade classic Southern homes, many of antebellum vintage, included in the Isle of Hope Historic District. Within a 20-minute walk from Isle of Hope Marina, you can plunge through the arched gates of Wormsloe Plantation, where you encounter a 1.5-mile long tunnel of hundreds of live oaks locking branches overhead. At the homestead, take a good look at the old house's walls, which are attractively textured with embedded fragments of oyster shells. Early colonists made this tabby mixture themselves. Crushed oyster shells were burned to produce lime, which combined with sand and water, then solidified into tough house blocks.