The nine-bedroom Grade I-Listed building, just outside Ogle village, which is up for sale with Sanderson Young Estate Agents, includes a magnificent drawing room and a dining room, both with inglenook fireplaces and beamed ceilings.
Ogle Castle was built on an Ango-Saxon ruin and is one of the oldest inhabited buildings in Britain.
"The gear tower assembly was the most complex mechanism we had designed up to that point,"
Ogles said.
From their base at Longhirst Hall they will sally forth on daily trips to view landmarks associated with the Ogle family which was prominent in both Northumberland and British history.
The visit has been organised by 60-year-old Jim Ogle, of Atlanta, USA, a retired railway worker and member of the Ogle Family Association of America.
The Ogles were prominent in both Northumberland and British history.
The Ogles couldn't see enough and their trips out included Hexham Abbey, Ogle Castle, Bamburgh Castle, Eglingham Hall and churches which had strong associations with the family.
However, the Ogle family lived on at Kirkley Hall until the early 1900s and included Captain Chaloner Ogle, a knight and Admiral of the Fleet, and Newton Ogle, who became Deacon of Westminster.
Now the Ogle Family Association of America has decided to hold its annual reunion in the UK for the first time.
The Ogles from whom the visitors descend left for America on the British expedition which captured New Amsterdam ( since renamed New York ( and Delaware from the Dutch in 1664.
The Ogle family was prominent in Northumberland and British history.
They are all descendants of the prominent Ogle family, which owned Kirkley Hall near Ponteland for more than three centuries.
The Ogle Family Association of America will hold its annual reunion in the UK for the first time.
Ogle Castle is for sale through Sanderson and Young at pounds 1.795m, tel: 0191 223 3500.
The stately pile near Ponteland ( now home to an agricultural college ( was at the centre of the multi-national visit, in which Americans, Canadians and New Zealanders connected to the
Ogle family came to explore their North-East heritage.