Martin County centers on Stuart, its county seat, where the St. Lucie River meets the Indian River Lagoon. Beaches on Hutchinson Island, Jonathan Dickinson State Park and the Hobe Sound National Wildlife Refuge keep nature close, and a four-story building height limit preserves a low-rise skyline. I-95, Florida's Turnpike and US 1 link the coast to the Palm Beaches. Homes include waterfront properties, golf communities, condos and wooded acreage.