Chincoteague National Wildlife Refuge

14,000 acres covering the Virginia end of Assateague Island — a 60 km barrier island with no permanent human residents, designated a National Natural Landmark and the largest of its kind in the mid-Atlantic.

The wild horses are why most people come. Around 150 live on the Virginia side, owned improbably by the Chincoteague Volunteer Fire Company, which has rounded them up and swum them across the channel every July since 1925 for the Pony Penning auction — a genuinely strange spectacle that draws tens of thousands. A fence at the state line keeps the Virginia herd separate from the Maryland one. Beyond the horses, this is one of the premier birding sites on the Atlantic Flyway, with over 320 species recorded, plus sika deer, the endangered Delmarva fox squirrel and enormous numbers of snow geese in winter.

Practical: entry is by vehicle pass, roughly $10 a day. The 5 km Wildlife Loop is closed to cars until 3 p.m. but open to walkers and cyclists all day — early morning is by far the best time for horses and birds. The Woodland Trail leads to a pony overlook, and the Herbert H. Bateman Center handles orientation. Bring insect repellent; the marsh mosquitoes are not a joke.