This picturesque 14th century Dutch castle, the Kasteel Terworm, has been turned into a luxury hotel by the Van Der Valk Group. The work included 3,000m2 of Cwt-y-Bugail Blue Grey Welsh slate and 250m2 of Penrhyn Heather Red Welsh slate roofing supplied by Alfred McAlpine Slate through Dutch roofing merchants LEI Import BV.