Dorset Area of Outstanding Natural Beauty contains about 44% of Dorset, and is entirely within the county, including the greater part of its coastline - from Lyme Regis on the border with Devon, eastwards to the Isle of Purbeck (Studland Point) and Poole Harbour, though excluding Weymouth and the Isle of Portland. This section comprises the majority (78 miles) of the Jurassic Coast, famous for its fossils and spectacular cliffs of sedimentary rocks, very varied in colour and form, and overlooking lengthy beaches of sand and pebbles, all explorable at sea level, at low tide, or via by the coast path above. The one exception is the section northwest of Weymouth, where for 18 miles the cliffs give way to the gravel barrier of Chesil Beach, sheltering an extensive tidal lagoon, East Fleet and West Fleet.
Inland, the 436 square mile AONB is dominated by a broad band of chalk hills, stretching from the lower Stour Valley at Bridgeport, northeastwards to Blandford Forum, and continuing into the adjacent Cranborne Chase AONB, with a narrower spur extending southeast into the Isle of Purbeck. The calcareous grassland on the downs supports rich and varied plant life, seen in several dozen local and national nature reserves. Around the hills are many valleys, harbouring sheltered woodland and coppices.
Also within Dorset AONB are a good number of historic sites, including ruined abbeys and medieval castles.
Inland, the 436 square mile AONB is dominated by a broad band of chalk hills, stretching from the lower Stour Valley at Bridgeport, northeastwards to Blandford Forum, and continuing into the adjacent Cranborne Chase AONB, with a narrower spur extending southeast into the Isle of Purbeck. The calcareous grassland on the downs supports rich and varied plant life, seen in several dozen local and national nature reserves. Around the hills are many valleys, harbouring sheltered woodland and coppices.
Also within Dorset AONB are a good number of historic sites, including ruined abbeys and medieval castles.
Historic Sites Relics from a once large monastery near the coast; a wall fragment, a tithe barn, church foundations and the detached St Catherine's Chapel Rating: ★★★★★ |
 Limited remains of a Benedictine monastery; a porch (once the entrance to a great hall), a guest house and a tithe barn Rating: ★★★★★ |
 Large, ruined castle with a spectacular location on top of a steep-sided hill; construction started in the 11th century Rating: ★★★★★ |
 The largest hillfort in the country - half a mile across, enclosed by ramparts and ditches, on a chalk ridge south of Dorchester Rating: ★★★★★ |
 Late Neolithic circle of nine sarsen stones, two large and seven small, in a shallow valley adjacent to patch of woodland Rating: ★★★★★ |
Coastline Sea arch and a circular cove, part of a varied section of the coast that also has headlands, sandy beaches, chalk cliffs and other eroded formations Rating: ★★★★★ |
 Cliff-bound section of the Jurassic Coast on the Studland Peninsula, including Anvil Point, Dancing Ledge and Headbury Quarry Rating: ★★★★★ |
 Short section of the Jurassic Coast, including sea stacks at Mupe Rocks and Bacon Hole, and remains of ancient trees at the Fossil Forest Rating: ★★★★★ |
 High cliffs, wildflower meadows and pebble beaches along five miles of the Jurassic Coast, including Charmouth, Stonebarrow Hill and Golden Cap Rating: ★★★★★ |
 Inaccessible chalk stacks below vertical cliffs, with more spires nearby (The Pinnacles), and the high ground of Ballard Down Rating: ★★★★★ |
 Three mile section of the coast, lined by high chalk slopes with narrow beaches below; includes the promontory of White Nothe Rating: ★★★★★ |
Nature Reserves Over 100 acres of ancient woodland, plantations, pasture and rough grassland, centred on the shallow valley of a fast-flowing stream Rating: ★★★★★ |
 Ancient woodland across a steep, northeast-facing slope, with particularly dense bluebells in the spring Rating: ★★★★★ |
 Ancient woodland on gently sloping ground crossed by a few tiny streams, plus a small wildflower meadow Rating: ★★★★★ |
 Limestone grassland with sea views, formerly a quarry, south of Swanage; home to a range of wildflowers including the early spider orchid Rating: ★★★★★ |
 Chalk downland with grassy slopes and dry valleys, one containing a train of ancient sarsen stones Rating: ★★★★★ |