A short boat ride beyond Orford Quay lies mysterious Orford Ness, Europe's biggest vegetated shingle spit. A 5-mile-long path takes you through beaches and salt marshes to see migrating and native birds and to discover the secret past of the spit—from 1913 until the mid-1980s it served as a military site. The first experiments with radar were carried out here in the 1930s. If you'd rather sit than walk, take the tractor-drawn trailer tour on the first Saturday of the
month, July through September (reservations essential).