Celbridge, Co. Kildare. firstname.lastname@example.org; www.castletown.ie; Twitter @opwcastletown; Facebook: castletownhouse; Facebook: heritageireland. T: +353 1 6288252. Just 20km from Dublin City centre. Located at Exit 6, M4 for vehicle access or take the 67 bus to Celbridge's Main Street, with the house a 10-minute walk through the picturesque parklands. Open Mon-Sun: 10am-5pm, Mar-Nov, with guided tours on the hour. Bookings of eight or more can be made by phoning 01 6288252. Map.