Lacken or Lackan is a townland and small village in the west of County Wicklow, Ireland, located on the shores of the Blessington lakes and western edge of the Wicklow Mountains. Lacken in situated on the Blessington 'Lake Drive' and is sometimes noted for its view across the lake. The area has been used as a location for a number of number o…Lacken or Lackan is a townland and small village in the west of County Wicklow, Ireland, located on the shores of the Blessington lakes and western edge of the Wicklow Mountains. Lacken in situated on the Blessington 'Lake Drive' and is sometimes noted for its view across the lake. The area has been used as a location for a number of number of films, including Dancing at Lughnasa, This Is My Father and P.S. I Love You.