Following is a list of fourteen known mills in Kilmacow which include , linen paper , linen and carding mills, corn and flour mills.
1.Linen paper mill ,The knock 2.Greenville linen mill
3. Kilmacow flax carding mill
4.Scroders mill ,Greenville
5. Dangan mill
6. Brown's mill Greenville
7. Cronin's mill , Upper Kilmacow
8. Goouche's mill 'Lower Greenville
9. Loughry's mil , Kilmacow
!0.The Pill mill
11.Kelly's / Cooks mill, Lower Kilmacow
12. Newtown or Cappagh mill
13.Gaulsmill
14.Strangsmill

Linen paper mill
Early in the 1700s, John Green of Greenville, introduced a linen paper mill into the parish of Kilmacow. It was built on what is now known as the ' Farm ' or the ' Knock ' close to the Kilmacow sports complex.The exact size of the mill is not known but we do know it was driven by a 16ft waterwheel and had a vat.

Flax carding mill
In 1746 a Belfast linen merchant named Patrick Smith arrived in Waterford to start a linen industry. A few years later in 1949 a linen carding mill at Lower Kilmacow was built by his son. This flax mill was driven by a breast shot water wheel which rotated specially constructed brush rollers , these in turn combed the linen fibre into straight 4ft lenghts. After this the thread was spun on the spinning wheels in the homes of the local people.

An old Gate

DUNKITT Near the Blackwater river and about 4.5 km from Waterford City, we have, at last, a site indicated military predominance in its name, Dun, or fortress. It takes its name from an interesting and typical man-made fortification or rath, in this case a ring fort called the Rath of Dunkitt. The proximity of the river and a continued habitation as in Dunkitt House indicates it was an important place at one stage. Nearby there there is a churchyard with the hallowed ruins of a nave and chancel church.

Grannagh Castle

Grannagh Castle
Granagh Castle despite its ruined state still has an awesome and majestic stance on the banks of the river suir just 5km from Waterford city in the parish of Kilmacow.
Caisleán Greannach, the Castle of the Gravelly Place, was also known as Dón Braum. It is said that Braum erected a fortification here to guard the river and later to repel the attacks of the Norsemen from their settlement at Waterford. When the Normans came, the site fell to the De Poers who occupied it until Eustace De Poer was executed for treason in 1375. Edward the Third then granted the castle to James 2nd Earl of Ormond.
Tradition says that the present Castle was built by James the 3rd Earl of Ormond in the 1300s. This is the same Earl of Ormonde who established Kilkenny Castle. The Castle remained in the Ormond family at least up to the 1640's. It endured several attacks throughout the ages. In Cromwellian times two cannons were fired on it and his soldiers besieged the castle. The partially demolished castle ensured a victory for Cromwell's army.
In the 19th Century its owner George Roche of Limerick carried out repairs in 1824. As it was very delapidated mainly because locals carted off large parts of it for building material. The Board of Works did some restoration in 1925.
There is stone tablet embedded in the wall of the Castle and it states that it was restored by George Roche through a Waterford mason by the name of O'Rourke. On a part of the ruin facing the main road there is a plaque erected by Board Failte. It says: "This ruin once the favourite residence of Máiréad Moore wife of Piers,8thEarl of Ormonde.This Castle a 15th Century fortress was taken by assault by Cromwellian forces by Axtel in 1650".
It has always been said that there is a tunnel going from Granagh Castle, under the river suir to the estate of Mount Congreve. Tunnels dos exist beneath the castle ruins that once held prisoners. But it has yet to be proven if they go all the way under the river.