As early as 1919, Poulaphouca was identified as a possible location to construct a dam to provide fresh water and electricity to Dublin’s rapidly growing population. Consisting of two separate valleys shaped by both the King’s River and the River Liffey, 5,500 acres was required to form the reservoir as part of an ambitious joint project by the Electricity Supply Board (ESB) and Dublin City Council.

In preparation for the flooding, 55 residential homes and 12 labourer’s cottages, farm holdings and turf banks were abandoned, and a number of bridges were destroyed. On March the 3rd 1940 at 10am, the sluice gate was dropped at Poulaphouca Dam and it took one and a half years for the reservoir to reach full capacity.

The reservoir completely covered the townland of Ballinahown (often referred to as the ‘Hidden Village’), which had been situated on the banks of the King’s River. It was here that a sandy road connected the villages of Lacken and Valleymount, making the journey a much shorter one than it is today.

After a delay in construction due to the outbreak of the Second World War, Ireland’s second hydroelectric power station began limited operations in 1944. On the 11th of December 1952, the local parish priest Fr. O’Loughlin switched on the electrical power for the parish – over a decade after the valley had been flooded.

In 1978, the water in the reservoir fell to an all-time low level, briefly revealing the remains of a number of the abandoned houses and St. Boden’s Well.

Originally a local primary school, this building was constructed in 1869 by Mrs Smith of Baltyboys House “as a model for other schoolhouses as that are much required in the neighbourhood”.

On the 16th of November 1916, the building was sold to the people of Lacken for the nominal purchase price of £5, by Elizabeth Graydon Stannus, granddaughter of Mrs Smith and mother of Edris Stannus. Edris was destined to become the world-famous Dame Ninette de Valois who established the Royal Ballet School, London.

This is the school in which Meryl Streep’s character in the film ‘Dancing at Lughnasa’, is a teacher.

A bullaun (from the Latin word bulla, meaning a bowl) is a boulder or rock with depressions carved into its surface. Bullaun Stones are thought to have been used as grinding mills to prepare special ritual food in pre-Christian times and were later adapted to the Christian faith.

It has also been suggested that they were used for a ritual connected to fertility, perhaps by grinding healing herbs. The water which accumulated in the bowl-shaped hollows was reputed to cure warts.

Originally called Kilboden, this is the site of an ancient church which most likely fell into disuse after the 16th century Reformation. According to local folklore, Boden or Buadan, was the Bishop of Glendalough and a descendent of St. Kevin. It is thought he is buried under a stone slab in the graveyard.

The Templeboden Single-Arch Bridge was built by a mason named Kearney with the proceeds of local collections in the 1840’s, when the country was suffering the ravages of the Great Famine. Although many bridges in the area have been destroyed by floods over the years, the craftsmanship of this Wicklow granite structure has ensured that it still stands strong.

This Cillín, is one of approximately 1,400 in Ireland where in less enlightened days, unbaptised infants were buried, usually under the cover of darkness. These Cillíns are, in the words of Brendan Graham, author of that haunting song Crucán na bPáiste, monuments “to centuries of heartbreak.”

This holy well was blessed by Bishop Boden, the Bishop of Glendalough in the 1600’s. It is said that the well had miraculous curing powers and attracted people from all over Ireland to bathe in the healing waters. Around 1900, walls were constructed around the well to provide privacy for the pilgrims.

The well was lost during the flooding of the valley, however, in 1978 the well was exposed during an unusually dry period and a special Mass ceremony was held with an attendance of around 1,000 people. The granite bath used at the well can now be found outside Lacken Church.

This church was built in 1811, 18 years before Daniel O’Connell secured Catholic Emancipation in the House of Commons. In 1882, Father Edward Rowan dedicated the church to Our Lady of Mount Carmel. The Baptismal Font is said to date back to 1441 and came from an earlier church at Templeboden Graveyard.

The gold chalice used during a Mass service, is inscribed 1802 and the large trough-like granite bath that sits beside the church, is believed to have come from St Boden’s Well.

Situated on the Blessington Lakeside Heritage Trail, the area’s rich and unique local heritage can be explored on a route that surrounds the lake.

As Ireland’s largest man-made lake, it offers a wide choice of outdoor activities to enjoy, such as birdwatching, cycling, fishing, canoeing, rowing and sailing with bicycle and boat hire available locally. The area is a popular choice for hill walking and boasts a selection of interconnected recreational paths to nearby hills. The renowned Wicklow Way and St. Kevin’s Way are within easy reach of Lacken.

A family-friendly walking and cycling trail encircling the Blessington Lakes is currently in the advanced stages of development. The scenic route will be over 40kms in length and take in the lakeside villages of Lacken, Ballyknockan and Valleymount along with two spurs linking to Russborough House and Parklands and the Tulfarris Resort.

At 599m, the summit provides stunning panoramic views that includes the mountains of Seefin, Seefingan and Seahan, each renowned for the megaliths that sit on their crowns. Recreational access is gained from the Mass Path beginning in the village or from the Gap Road.

The dominating Black Hill stands at 602m above sea level with a granite stone monument located close to the summit. This is a memorial to J. T. Lamb, S. Wright, F. H. Erdwin and K. Hill, who lost their lives here when their Handley Page Hampden S/N AD730 plane crashed on the 17th of April 1941. They are buried in the graveyard at St. Mary’s Church in Blessington.

Recreational access is provided via the Pound Lane Agreed Access Route and from a car park on the Gap Road.

The blend of stunning natural landscapes, historic buildings and County Wicklow’s thriving film industry, has attracted many international film productions to choose Lacken and it’s locality as a film location.

‘P.S. I Love You’ (2007) – Gerard Butler, Hilary Swank.

‘This Is My Father’ (1999) – Aidan Quinn.

‘Dancing at Lughnasa’ (1998) – Meryl Streep.

‘Widow’s Peak’ (1994) – Mia Farrow, Natasha Richardson.

‘The Lilac Bus’ (1990) – Stephanie Beacham, Con O’Neill.

‘Captain Boycott’ (1947) – Stewart Granger.

Alfred Zeller was born in Liestal Switzerland in 1847. He led quite an eventful young life in West Africa serving as the Pro Consul in New Calabar and later the V.P. of the governing body of Opobo in modern day Nigeria, before arriving in Lacken in 1891. Capt. Zeller had met and married a Lacken woman, Mary Clarke, in Liverpool and together they bought what is now ‘Zeller’s Public House’.

He proceeded to build a small hotel on the site of where a shebeen had existed centuries beforehand and applied for his first liquor licence in October 1898. Five generations later, the public house is still run by the Zeller family.

Thanks to the mountain and water habitats, there is an abundance of wildlife found in the area. Wicklow Mountains National Park, which covers over 20,000ha of the Wicklow Mountains, stretches to Sorrel Hill.

The reservoir is designated a Special Protection Area (SPA) due to the population of Greylag Geese and Lesser Black-backed Gulls. Other notable waterfowl species include; Whooper Swan, Great Crested Grebe, Snipe, Lapwing and Curlew to name but a few. The reservoir is stocked with trout, perch and pike.