Lulworth Cove is a cove near the village of West Lulworth, on the Jurassic Coast in Dorset, southern England. The cove is one of the world's finest examples of such a landform, and is a World Heritage Site and tourist location with approximately 500,000 visitors every year, of whom about 30 percent visit in July and August. It is close to the rock arch of Durdle Door and other Jurassic Coast sites.

The cove has formed as a result of bands of rock of alternating geological resistance running parallel to the coastline (a concordant coastline). On the seaward side the clays and sands have been eroded away.

A narrow (less than 30 metres (98 ft)) band of Portland limestone rocks forms the shoreline. Behind this is a narrow (less than 50 metres (160 ft)) band of slightly less-resistant Purbeck limestone. Behind this are 300 to 500 metres (980 to 1,640 ft) of much less-resistant clays and greensands; Wealden clays, Gault and Upper Greensand.

Forming the back of the cove is a 250-metre-wide (820 ft) band of chalk, which is considerably more resistant than the clays and sands, but less resistant than the limestones. The entrance to the cove is a narrow gap in the limestone bands, formed by wave action and weathering. The wide part of the cove is where the weak clays and greensands have been eroded.

Stair Hole, less than half a mile to the west, is an infant cove which suggests what Lulworth Cove would have looked like a few hundred thousand years ago. The sea has made a gap in the Portland and Purbeck limestone here, as well as a small arch. The sea has made its way through to the Wealden clays and begun eroding them.

Durdle Door (sometimes written Durdle Dor) is a natural limestone arch on the Jurassic Coast near Lulworth. It is owned by the Welds, a family who own 12,000 acres in Dorset in the name of the Lulworth Estate. It is open to the public.

West Lulworth is a village and civil parish in the English county of Dorset, situated on the English Channel beside Lulworth Cove. In the 2011 census the civil parish—which includes most of Lulworth Camp army base—had 291 households and a population of 714. The village is a gateway to the Jurassic Coast world heritage site and is a popular tourist destination, especially for day trips.

East Lulworth is a village and civil parish nine miles east of Dorchester, near Lulworth Cove, in the county of Dorset, South West England. It consists of 17th-century thatched cottages. The village is now dominated by the barracks of the Royal Armoured Corps Gunnery School who use a portion of the Purbeck Hills as a gunnery range. In 2013 the estimated population of the civil parish was 160.

Lulworth Castle, in East Lulworth, situated south of the village of Wool, is an early 17th-century hunting lodge erected in the style of a revival fortified castle, one of only five extant Elizabethan or Jacobean buildings of this type. It is listed with Historic England as a Scheduled monument. It is also Grade I listed. The 18th-century Adam style interior of the stone building was devastated by fire in 1929, but has now been restored and serves as a museum. The castle stands in Lulworth Park on the Lulworth Estate. The park and gardens surrounding the castle are Grade II listed with Historic England.

The foundations for Lulworth Castle were laid in 1588, and it was completed in 1609, supposedly designed by Inigo Jones. It was built as a hunting lodge by Thomas Howard, 3rd Viscount Howard of Bindon, a grandson of the 3rd Duke of Norfolk.

The castle was gutted by fire on 29 August 1929 and was left as a roofless ruin, the family building a new residence for themselves nearby. In the 1970s, restoration work began with the help of English Heritage. The restoration, finished in 1998, included a new roof and restored surviving walls in the interior, but no new internal walls or replacements for the destroyed upper floors were constructed.

In 1986 the Baltimore-born organ builder William Drake restored the 1780 Seede organ at the Roman Catholic Chapel at Lulworth Castle, a project that attracted attention internationally. The castle is still owned by the Weld family and is a tourist attraction, holding medieval-themed events. Part of the Lulworth Estate is in use as an MoD firing range as well as a wildlife conservation area.

Since 2017, the site has been used as the location for the Bestival music festival, with the castle's foreground being the location for the main "Castle" stage.