Corfe Castle lies just 30 minutes drive from Weymouth, heading past Wareham onto the Isle of Purbeck. There are plenty of places to visit along the way, including Ringstead Beach, Monkey World and Bovington Tank Museum at Wool, the “lost village” of Tyneham, Kimmeridge Bay and the oil wells, the steam railway to Swanage, Roman Walls and the Quayside at Wareham and more – not including the bird reserve at Arne, Poole Bay, Studland Bay, Old Harry’s Rocks, Brownsea Island and more….
Corfe Castle village lies in the saddle between two steep little hills, with the imposing Castle ruins atop the south-facing hill, dominating the skyline. The village has plenty of interesting curio shops, welcoming pubs (especially the Greyhound in front of the Castle grounds) as well as the National Trust shop and Castle Entrance. There are several car parks with a short walk to the Castle, although the one at the foot of the hill presents a stiff climb to reach the ruins at the top of the hill (perhaps a detour via the pub might be in order for refreshments!)
The Castle, built in the reign of William the Conqueror, dates from the 11th Century and guarded the route between the Purbeck Hills on the route between Swanage and Wareham, both valuable ports and centres of population at the time. Corfe was one of the earliest stone-built castles, but has suffered substantial damage over the ages, not least during the Civil War seiges of 1643 and 1645, after which Parliament ordered it be “slighted” (razed). Sandsfoot Castle near Weymouth escaped total destruction but Corfe was partly destroyed.
(There is an excellent article about Corfe Castle in Wikipedia – https://en.wikipedia.org/wiki/Corfe_Castle)